Will Thinner Oils Damage Your Engine?


Can thin motor oils protect your engine?
Sponsored by Mobil 1 motor oil - Visit AutoZone to find the right Mobil 1 motor oil for you: bit.ly/2P218TW
What do oil weights mean? What does 5W-30 mean? Do thinner oils get better fuel economy? Do thin oils like 0W-20 protect your engine? I spent some time discussing these questions with Mobil 1 engineers and am excited to share what I learned. There’s an incredible amount of testing and verification that goes into labeling a motor oil’s viscosity rating, which is the single most important factor for how a motor oil will perform in an engine. Motor oil is responsible for protecting your engine, removing contaminants, reducing friction and cooling your engine. Plus, motor oil creates a protective barrier between moving metal parts allowing for your engine’s longevity. In this video we’ll use a 6.2L V8 engine cutaway from the C8 Corvette to better see and understand how oil interacts with automotive engines. #Mobil1Partner
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  • Engineering Explained
    Engineering Explained5 måneder siden

    *Clarification!* There still seems to be confusion about the viscosity decreasing with heat, yet the number is higher, for example 5W-30. 1. This is explained from about 1:05 to 3:05. 2. All motor oils (basically) will decrease in viscosity as they heat up (become thinner). 3. Motor oils will increase (become thicker) in viscosity as they cool (as demonstrated in the video with graduated cylinders). 4. A 0W oil has a lower viscosity than a 10W oil when it is cold (the number is lower). 5. A 40 grade oil is thicker than a 30 grade oil when it is hot. 6. A 10W-30 (as shown at 2:28) will be thicker at cold temperatures, but thinner at high temperatures, versus a 0W-40. 7. The rating is temperature dependent! There is a cold rating, and a hot rating, which comes from tests (shown at 3:17). 8. Even though the number increases as it gets hot (like 5W-30), the viscosity decreases. It means the oil behaves like a 5 grade oil when cold, but a 30 grade oil when hot. How? 9. Viscosity modifiers are molecules that expand as they heat up, which decreases how much thinner the oil gets as it heats up. It still gets thinner, but not as thin as it could get if the viscosity modifiers were not in there. This is what makes it a multi-grade oil. Because it behaves like different oil grades depending on temperature. 10. In summary, a 5W-30 will decrease in viscosity as it is heated, however its hot rating is a thicker grade oil than its cold rating. See plots in video (2:28) to see what this looks like.

  • James M

    James M

    10 dager siden

    @Adam WestIf 5W20 is recommended and car under warranty or extended warranty, go with that. If not in warranty, 5W30 is fine. Most 5W30 oils will by fully synthetic with additives. I recommend Ford 5W30 Oil is excellent and also Total Future 5W30 very good. My Kuga uses 0W30 and I can use 5W30 providing it has A5/B5 spec (same as Volvo). 5W will still work just as effectively at low temperatures. Note more important for engine longetivity is the way you drive eg dont thrash when cold or hot, check oil level regularly at least once a fortnight etc and regular oil changes eg at least every 12 or worst case 18 months depending on mileage. Read your handbook and also see what that recommends. You can get good deals on Amazon and ebay. I found Ford 5W30 fully synth formula F at £25 for 5 litres.

  • Adam West

    Adam West

    10 dager siden

    I've got a 2019 fiesta st Ecoboost and want to know can I use 5w30 for summer and winter also is their a benefit using 5w30 over the recommended 5w20

  • additude obx

    additude obx

    12 dager siden

    OK, I get the motor oil viscosity ratings. What happens when a high viscosity additive like LUCAS is added and is combined with the engine oil? 0W-20, does it mix and change the viscosity rating of the engine oil?

  • PhillLsx Ga.

    PhillLsx Ga.

    27 dager siden

    @James M the owners manual tells all...

  • James M

    James M

    27 dager siden

    @PhillLsx Ga. but also consider the climatic conditions you are driving in.. eg in case of extreme cold or heat etc

  • Daniel Mangion
    Daniel Mangion22 timer siden

    what if your manufacturer recommends multiple grades? On an older diesel vehicle, say 2000, can you go from current filled 5W-40 to 10W-40 or 10W-60? even if these grades are in the car manual.

  • IndustMachWerksofTX Haines
    IndustMachWerksofTX HainesDag siden

    If we all just stop driving crazy and keep the pedal off the floor we would see a huge increase in fuel mileage😂

  • IndustMachWerksofTX Haines
    IndustMachWerksofTX HainesDag siden

    Yeah put thinner oil so engines don’t last as long anymore. Just throw away and get new car in few years anyway. On some engines nothing has changed with the engine, but they keep recommending thinner oils just to get maybe little better gas mileage that none of us will actually ever realize in real world conditions. They only realize it in the lab under controlled conditions. None of this matters anyway, we will all be driving electric and people will still be arguing about what oil to use🤣

  • Vasilian Sotirov
    Vasilian Sotirov4 dager siden

    When you filled up the syringe i thought myself "Ahh i want some honey... That oil really looks like honey" And then you said it's honey

  • Fordman8011
    Fordman80114 dager siden

    Yes it does damage your engine

  • Erwin Padgett
    Erwin Padgett4 dager siden

    All that and you forgot oil is temperature sensitive to a specific region of the world. You would never run thinner oil in Higher temperature regions or in the Desert regions. The brains that think thinner oil is correct forgot Humidity in Regions around the world. Guess you forgot white looking oil on your Oil Cap from Humidity. Thicker oil stick to metal parts more than thin oils do. Yes thin oil flows easier and faster but it doesn't stick to metal parts better that thick oil does. You forgot to mention these proven facts.

  • yoyo762
    yoyo7626 dager siden

    The multi grade oils have plasticizers mixed in to help cold flow. only 30 weight oil is 100% oil. That is why most race engines use only 30 weight because its ALL lubricant.

  • Donkey Kong
    Donkey Kong6 dager siden

    Should I use what my car manufacturer recommends?

  • Daniel Fl.
    Daniel Fl.6 dager siden

    I use 5W/30 as the car requires it

  • J R
    J R7 dager siden

    Your videos helped me get a job in a garage with no experience at all. Thank you so much!

  • Justin Case
    Justin Case7 dager siden

    Who got drunk in Bowling Green and put the engine in the trunk. Too much bluegrass smoking.

  • Justin Case
    Justin Case7 dager siden

    Think it got crazy when 0W-20 came out? Now Toyota uses 0W-16, next up 0W-10 ! MPG!

  • へいめんけんさく
    へいめんけんさく8 dager siden

    HTHS is inportant

  • Nawir Ibrahim
    Nawir Ibrahim8 dager siden

    Thank you for this video. Please also think about oils in PHEVs and EVs. Service internals and long drain periods. Edit. Going ahead in the time when some of us a changing from ICE to Hybrid, PHEV and BEV, we need to know about lubricants for these. Its a bit of an unknown. Does one change the oil in Hybrid or PHEV based on distance travelled using Gas only or both propellants?

  • William Charles
    William Charles8 dager siden

    As always, great stuff.

  • ru40342
    ru403428 dager siden

    Foreman here. This video is quite accurate but not completely accurate. Some manufacturers, particularly Japanese manufacturers, recommend lower viscosity oil so that consumers get better fuel economy and feel good about their cars. Those cars need 5w-30 or 0w-30 but most Japanese manufacturers recommended 0w-20. I have seen many Japanese cars, especially older Japanese cars having many issues due to lower viscosity engine oil used (0w-20 even after the car hits 200k km). If you wanna use 0w-20 for your cars, monitor the engine oil, especially after you hit 100k km. Switch to higher viscosity as your car hits higher mileage.

  • C Cecil
    C Cecil9 dager siden

    20w50 in the summer in the Winter 20w40 I never use 5w30 or 10w30 premature wear.

  • SA Bjork
    SA Bjork9 dager siden

    Are those stemless Cabernet Riedel Crystal glasses you are using? Does the wife know? Time to crack a new bottle, Cheers!

  • Alfred E. Newman
    Alfred E. Newman9 dager siden

    As I aged I've found just like high mileage engines that the thin stuff will go right thru. Used to be fine with log cabin syrup on my pancakes but now have had to switch to either sorghum syrup or honey.

  • Rangermike
    Rangermike9 dager siden

    I have heard way too many v8 engines that have been in production for years like fords 5.0 Chevys 3.5 and tundras 5.7 . Many now have knocking noises since manufacturers have switched to 0w20 and yet those engines just a few years ago used 10w30 and we're all good quiet engines so I am having a tough time accepting 0w20.

  • Andrew Flores
    Andrew Flores10 dager siden

    So what about 0w-16 in a 0w-20??

  • [ ]
    [ ]12 dager siden

    7:33 (X) Doubt

  • Pinaki Das
    Pinaki Das12 dager siden

    No BMW owner will agree with your statement ;)

  • BiG BeAR
    BiG BeAR13 dager siden

    All these “oil” videos never address the tuner community. Only stock engines. What if I’m running a tune with a bunch of mods in a 2020 Civic Si, pushing 26-28 boost vs 18-19 stock? The manual calls for a 0W20, but I have a feeling I should be running something higher weight. I can’t seem to ever find any info addressing my situation... I currently run Redline 0W20 High Performance oil, they also have a series of race oils, in 5W20, 10W30 and so on...I know the drain intervals should be shorter for that oil, but I can’t get an answer for how much exactly. Would that oil offer better protection? No clue...no info on the subject.

  • ApoE-ε2/ε3
    ApoE-ε2/ε314 dager siden

    Be sure to ask your doctor if this drug is right for you. Did I say, be sure to ask your doctor? Who did you say was sponsoring this? Pfizer, or Mobile 1, I can't tell the difference.

  • Bapster Man
    Bapster Man16 dager siden

    Lexus recommends this 0w-20 for my Lexus is300h so I’m going to use 0w-20, cause let’s be honest the Japanese are the best engineers bar none.

  • Dave Bar
    Dave Bar16 dager siden

    Thicker oils certainly can .... 20w50 fer xample

  • Charles Cimino
    Charles Cimino17 dager siden

    >MK7 Golf Owners manual: "use 5W-30 or 5W-40 synthetic oils matching VW 502 00, 503 00, or 504 00". Oil cap says Castrol. 2018 VW Dealer says "We use Castrol Edge 5W-30 as factory fill on these ea888 Gen 3 engines". 2020 VW Dealer says "VW changed the spec, we use proprietary stuff here now, it's 5w-40. I wouldn't use 5W-30 if I were you". Me: Flips out and searches for an hour.............Eventually says "F it" and uses Liqui Moly 5w-40 synthetic........JUST TELL ME WHAT TO USE ALREADY VW IT ISN'T THAT HARD!

  • Matthew Godwin
    Matthew Godwin18 dager siden

    My OEM recommends 10w-30 for summer temps and 5w-30 for winter. Kinda interesting.

  • Brandon Robertson
    Brandon Robertson18 dager siden

    6.4L Hemi (truck engine) will self destruct in 40k to 60k. The thin oil for better efficiency will not make a damn when you wipe out the cam, rod or main bearings.

  • Brandon Robertson

    Brandon Robertson

    15 dager siden

    @CastleBravo Well, the 5.7L has the same problem, but not as often. It is the 6.4L truck engines that are dropping like flies. I work for a utility company. Our trucks have regular oil changes but have quite a few that are having this issue (both 5.7L and 6.4L). My engine lost the main and rod bearings and also later after a short block exchange, lost the cam and 3 lifters. This is either a poor design or the contacting metal surfaces and/or oil are not hard enough or does not provide the protection oil film needed. I live the full on power, but I can't afford a major rebuild every 40k to 70k mileage. These was the intervals that my company truck failed in twice.

  • CastleBravo


    15 dager siden

    Mine (5.7) recently eclipsed 100k miles and runs like the day I purchased new. Been using 5w-20 conventional for first 75k, then synthetic since. Burns about a 1/4 qrt every 3k miles. Going for 15th oil change tomorrow.

  • Brad Gardam
    Brad Gardam19 dager siden

    Your first sentence is W rong right off the bat, we don't weigh our oil. W=winter/viscosity and nothing to do with weight, even the SAE corrected themselves over that mistake, then you misinterpreted grade, grade is a S for petrol oils, ie SG or SL, and SN etc.

  • Light of Kai
    Light of Kai19 dager siden

    Should i go with 5W30 or 5W40? for a Stock 2015 WRX, brief spirited driving few times weekly but rarely hitting redline ( under 6,000 rpm) Asian climate (25-35 degree C) Frequent start. Daily commuter 10-20km Manual recommend 5W30 Subaru Service Cntr recommend 5W40

  • Nhoppasit M Hanjitkasem
    Nhoppasit M Hanjitkasem19 dager siden

    My card is toyota alphard ayh30 and the manufacturer recommended a variety of engine oil grades which one do i choose? 0w-20, 5w-20, 5w-30 and 10w-30 Will be waiting for your reply I live in thailand

  • Alexi7666
    Alexi766620 dager siden

    Decades ago I put 20W-50 Castrol in my '91 Accord in the Summer and didn't change to 5W-30 until the following Spring. MPGs that winter dropped from 30-32 mpg to 26-28 mpg. Valves were noisy, too. Never again.

  • FRANK Gman
    FRANK Gman20 dager siden

    Can thin motor oils protect your engine? Yes. But for how long? Are they sacrificing longevity for 0.5% more efficiency? Are they using these oils just to meet some government mandate and to hell with the consumer when their vehicles wear out prematurely? Do you think you will get 200, 000 miles on that C8? Just a thought.

  • MasterSpin77
    MasterSpin7720 dager siden

    We used to run 05 weight in our Hemi Super Stock engines (930 h.p.) tried 02 but there was no H.P. difference..thicker oils in synthetic form wont flow as well as a mineral oil unless it is heated first...20/50 synthetic burns up the pushrod tips..

  • Pinkie Love
    Pinkie Love20 dager siden

    yes,,Always go by recommended kind

  • Ken Gold
    Ken Gold21 dag siden

    5W50 Redline :)

  • Fred Lovitt
    Fred Lovitt21 dag siden

    has any auto maker built V4 engine?

  • John Hasse
    John Hasse22 dager siden

    I still believe that very high mileage cars would benefit from a slightly higher right hand (hot) viscosity number. (overall, very good)

  • John Hasse

    John Hasse

    19 dager siden

    @Rusty Shackleford I am low tech, and far from town. My car is over 15 years old, and over 100,000 miles. Since, as you pointed out, 10-50 is never out of the range of 10-30 it would seem to me to be obvious that 10-50 would be a help in an old engine. Back many years ago I had a 76 ford with a big V8 and was running 10-30 and burning a quart in 300 miles. I went to 10-40 and cut the oil loss in half (a quart in 600 miles) then went to 20-50 (couldn't find 10-50 then -- in 1980--where I shopped) and the oil consumption was about a quart in 1000 miles.

  • Rusty Shackleford

    Rusty Shackleford

    19 dager siden

    I agree to an extent. I would do some oil analysis to make a final decision on that. If tolerances are still tight, that thicker oil might not be able to get in between the surfaces and actually starve them of lubrication leading to wear. On the other hand, if bearing clearances are opening up, then oil wouldn't be getting pumped to the valvetrain leading to wear. Oil analysis while using the correct oil would show if you need to bump up a weight by wear metals in the oil as would cutting apart the oil filter to look for debris. I have a 2011 Durango with the 3.6 Pentastar engine. I pull an enclosed trailer with it and in the summer, oil temperature can get 230+. I changed the oil when the oil life monitor told me (7,400 miles) to change it. I sent the oil in for analysis and it came back in great shape. They recommended going to 9,000 miles next time and testing it. I say all that to say I was thinking of going to a 40 weight oil (engine specs a 30 weight) due to the severe duty I am putting on the engine. After the analysis, I'm sticking with the recommended 30 weight because I'm not sure if there are smaller and tighter tolerances the 40 weight would have a harder time of getting into.

  • Ulysses
    Ulysses22 dager siden

    Fuel efficiency isn´t everyones favourite subject? Well, it should be. Transportation and cars are responsible for about 30% of global co2 emissions.

  • Phil. Nicol
    Phil. Nicol22 dager siden

    Redlining the engine, and keeping it in redline will! You push anything hard enough and it will break. 🙄 If you don't want to put wear on the engine, then turn to a mountain bike. 🛴

  • Vitaliy MzFk
    Vitaliy MzFk23 dager siden

    Sometimes manufacture recommended interval oil change 10-15 miles, or without change, like ATF. But it's not correct. Don't trust manufacture. They thinking only about many. Were is the new 2jz??? Why all new engine resources 300k?

  • leadnsteel
    leadnsteel23 dager siden

    My vehicle can use 5w30 or 0w40... I notice the engine feels peppier on the 0w40 and that is also thinner for cold starts too

  • J R
    J R23 dager siden

    That demo with the grad cylinders was great. Thank you.

  • Grand Rapids57
    Grand Rapids5724 dager siden

    GM should watch the Farm Project channel and factory fill this engine with Amazon Basics Synth.. that would be hilarious for the marketing department to manage.

  • Ron H
    Ron H24 dager siden

    Two questions: 1. What weight motor oil do you use? 2. What is your position on catch cans for PCV systems?

  • Ron H
    Ron H24 dager siden

    Years ago we used to put pre-oilers pumps on our engines to avoid wear on engine parts. Hit a switch and they run for a preset amount of time. Can’t remember the last time I have seen one used. Seems like it would be a good idea on modern vehicles with tolerances being much tighter...

  • Paul G
    Paul G24 dager siden

    If you live in the deep south you can use a 10w 30 instead of 5w30. If you live in Buffalo NY, and your engine spec is 5w-30 use 0w-30 instead.

  • Paul G
    Paul G24 dager siden

    Never use the manufacturers oil specification. The manufacturer has to meet CAFE standards and doesn't care how long your engine lasts. You want to extend your engin'se life and don't care about cafe standards.

  • William Brothers
    William Brothers24 dager siden

    can you do a video commenting on cylinder deactivation pros and cons? Thanks

  • Mike Wallace
    Mike Wallace24 dager siden

    Will tighter/closer tolerances ruin your Engine? Should we have an oil warmer before startup?

  • Bal Loney
    Bal Loney24 dager siden

    The viscosity of sperm reduces just after a few minutes.

  • Mike Wallace

    Mike Wallace

    24 dager siden

    @Bal Loney There is no problem with me or you. Sorry if you thought that.

  • Bal Loney

    Bal Loney

    24 dager siden

    @Mike Wallace Calm down, sir. Just trying to be funny here. Ok, I got your nerves, then.

  • Mike Wallace

    Mike Wallace

    24 dager siden

    @Bal Loney Better than, I got you flooding my mouth... ? Not , "Me " you understand.

  • Bal Loney

    Bal Loney

    24 dager siden

    @Mike Wallace I got youuuuu... under my skin. (Frank Sinatra)

  • Mike Wallace

    Mike Wallace

    24 dager siden

    I want to say something ........................................................ end

  • Giorg189
    Giorg18925 dager siden

    For international viewers, that 'feet pound of torque', sound like umba lumba, at least put a Nm number somewhere please.

  • ChrisGR93 _TxS
    ChrisGR93 _TxS26 dager siden

    11:28 actually if that occurs it doesn't mean that your crankshaf is stuck. it means the moving parts as the oil pump is producing higher pressure and higher pressure is making the turn harder.* also when that happens the oil pump release valve is open to prevent high pressure on parts that don't operate with variant pressure. If the oil is too thick and the valve can't release enough pressure you might damage something. ( when valve tappets for example get extremely high pressure and the camshaft hits it that can cause damage, wear the camshaft lobes, make a dip on the tappet and over time create a gap, a gap that over time will cause serious damage. If you're aggressive on the pedal on cold starts and especially on supercharged engines that has a lot of under-valve opening pressure, thats for sure its gonna happen. *depends how good the metals are.. 60c water temps and under 120c for oil temp on a full synthetic 5w40 or w50

  • ChrisGR93 _TxS
    ChrisGR93 _TxS26 dager siden

    8:02 so camshaft don't puch rods or hydraulic tappets the piston rings don't touch the cylinder bore..... pistons are floating and tappets have their own mind..... (books vs real experience)

  • Stan Kumiega III
    Stan Kumiega III26 dager siden

    One notable exception to " use what the manufacturer says:" any EJ series turbo Subaru engine. Subaru initially recommended standard 5W-30 changed at 7500 miles. That would eventually lead to a blown turbo. Many owners use 0 or 5W - 40 to better handle the heat from the turbo.

  • Andre Green
    Andre Green26 dager siden

    My blond girlfriend is a real Honey. I can confirm that she is really thicker than your honey.

  • M Sz
    M Sz27 dager siden

    5:05 new yaris hybrid has 0W8 oil

  • Roger Lord
    Roger Lord27 dager siden

    I was told that some modern engines have very small drain holes internally (back to the sump) and thicker oil can clog these oil ways, causing damage.

  • Justin Case

    Justin Case

    7 dager siden

    They get plugged with sludge, not good! Google sludge engines.

  • SL M.
    SL M.27 dager siden

    TOUCHE!!! My K1600 BMW recomend 5w40 I was going to use 10w40 .. now i will keep using 5w40 Thank you very much

  • Kesateria Matahari
    Kesateria Matahari27 dager siden

    Say, so I'm safe to use 5w50 for 20w50 engine? I live in hot climate, and the manufacturer recommends me use 20w50. They give a chart of which engine oil to use according to ambient temperature, but somehow they listed 5w50 as only suitable for really cold weather. Shouldn't the 5w50 gives the same lubrication as 20w50 given that the engine operates at the same temperature regardless of the ambient condition?

  • Hassan 1
    Hassan 128 dager siden

    Here in Middle East some of us still use 20w50 😂

  • Martini is a wino

    Martini is a wino

    16 dager siden

    My BMW takes 10w60 from the factory, sometimes I just use diff oil 75w90

  • John Franklin

    John Franklin

    18 dager siden

    @Hua Rang in the summer, in Southern California desert areas , temps average 110 to 125 degrees! And mild winter temperatures of 40 to 65 to 75 degrees. My oil cap says 5 20. But the owners manuel says 5 30 or 10 30 may be used, or necessary in warmer climates. So I run 5 30 year round, and my engine sounds very good. 80.000 miles on it now.. It came with 5 20 wt oil new. And sounded quite noisy....

  • Hua Rang

    Hua Rang

    21 dag siden

    Its a must for you because middle east temperature is like hell

  • Viñãyâk Kâtoçh

    Viñãyâk Kâtoçh

    25 dager siden


  • Brian Pompei
    Brian Pompei29 dager siden

    I have a motorcycle that requires a 20w 40 oil. But that oil is very hard to find. Would it be ok to use a 20w 50 oil since it is much easier to purchase.

  • Tanseri Ahmadbuyek
    Tanseri Ahmadbuyek29 dager siden

    What if a country that does not have a winter like Malaysia?? Does 'W' still work??

  • Frank A
    Frank A29 dager siden

    07:19 Thank me later

  • Dave Cullen

    Dave Cullen

    19 dager siden


  • Ethan Simmons

    Ethan Simmons

    26 dager siden

    2 days later.... thank you!

  • Alex H.
    Alex H.Måned siden

    i wonder when will 0w0 oils come out

  • Mr Jay

    Mr Jay

    24 dager siden

    Only would work on the south pole.

  • Vice Richter

    Vice Richter

    Måned siden

    0w0- whats this?

  • Darryl T
    Darryl TMåned siden

    Waiter: Would you like some coffee cream? Me: Yes, I would like to increase viscosity of my coffee.

  • Carbon Crank
    Carbon CrankMåned siden

    The word "synthetic" is being totally abused here. These oils are not man-made. They are petroleum products so people need to be aware they are not taking less oil out of the ground by using synthetic oils. Suddenly the industry decides to start with higher-quality crude than it had been using

  • Carbon Crank
    Carbon CrankMåned siden

    I cannot believe this guy has so many followers. And this video if you listen to him you would think that engines don't wear out. I think we all know they do. he doesn't explain that the weight rating is not room temperature viscosities, they have a temperate attached to them. the demonstration of the cold oil and the ball bearing is great but he should have stopped and pointed out just how ridiculously thick that oil was that was in the freezer and that was an oil That's rated to be like a 5 weight when it's been in the freezer. He should have said just how cold so you'd have an idea how thick your oil is when you have been sitting in freezing temps. Maybe you'd take it a bit easier on your car when it's cold. He doesn't come out and say the fact that cold oil does not lubricate as well as running temp oil. My theme remains the same. Motor Oil is motor oil. Motor oil is not a product, it's a marketing device. In this case, they pay him to help market it but he doesn't really do much. He doesn't say anything about Mobile that would make it better than other brands. There is no difference between the brands. They just have different marketing. Here is what his little Mr. Wizzard experiment shows. They start with a single weight oil that they know will be 30 weight viscosity at 200 degrees. They used additives to make the oil perform as if it was 5 weight when cold. It, obviously from the test, is not thinner when cold, it just lubricates as though it were thinner. It has the lubricating qualities of a thinner oil. Likely, they all use the same additives. And if there was real scientific data out there that proved one oil to be better than another regarding engine were that is what would be in their ads and links to the studies would be easily available. These companies compete through their marketing departments, there is no difference in what they sell. (and what little difference there is can be insidious. For instance, many people are very loyal to Penzoil. Penzoil is darker when you put it in than other oils and they know you'll think it's dirtier sooner than it really is. I always used Valvoline because it's more clear going in so when it looks dirty it is dirty. CastThe easiest way to say it is "Motor oil is not a product, it is a marketing device". The latest marketing device for the whole industry is synthetic oils. The word "synthetic" creates the illusion that synthetic oils are man-made lubricants that consist of artificially made chemical compounds which is absolutely false.

  • Baldspot
    BaldspotMåned siden

    I'm running -50w/-40. Great gas mileage.

  • R.J. Bedore
    R.J. BedoreMåned siden

    4:00 I am an engineer, not a tribologist, but from the limited research into motor oils that I have done it was my understanding that only conventional oils have these waxes form. That is one of the benefits of full synthetic oil that allows it to last longer since synthetic oils don't have these wax impurities that are naturally occurring in conventional oil. These crystals form when repeated heating and cooling of conventional oil causes the waxes to precipitate out of suspension from within the oil. However, the entire video you are showing and talking about Mobil 1 synthetic oils, and supposedly spoke with their engineers and chemists to get the information in this video. Could you please confirm with them whether or not these waxes are present in their synthetic oils? Otherwise, great video and thanks in advance for looking into this (assuming you are able to).

  • LesPauloCaster
    LesPauloCasterMåned siden

    So just to double check... I have a 2004 japanese Daihatsu with 300,000 Kilometers in it, but I should still use the owner's manual recommended oil. All mechanics in my city would say that's crazy talk. How did we get there?

  • steevo_102
    steevo_102Måned siden

    If or when a manufacturer recommends 0w-0, can I'll just throw in some Crisco.

  • Viñãyâk Kâtoçh

    Viñãyâk Kâtoçh

    25 dager siden


  • Antjosh
    AntjoshMåned siden

    Using 0-20 100% synthetic 200k miles

  • Denstoradiskmaskinen
    DenstoradiskmaskinenMåned siden

    What about those other numbers? I use 0w-30 & A5/B5 (?)

  • Mark Schneider
    Mark SchneiderMåned siden

    I'm old enough to remember when all there was, was straight weight usually 30w oil in all cars and trucks. I don't get how 0w-16 oil helps engines that suffer from more oil dilution (GDI), perform better or last longer.

  • 1894cossack


    22 dager siden

    Well it's not designed for those or destined for those engines. These will mostly be used in very modern engines using direct injection and lean AFR.

  • Haibo J
    Haibo JMåned siden

    So Jason, do you use 0w20 or 5w30 in the ND miata? North American owners manual calls for 0w20 but rest of the world call for 5w30.

  • Rigid Wing
    Rigid WingMåned siden

    Does that engine have an internal chain driven water pump? Like coolant in your oil?

  • DragNetJoe
    DragNetJoeMåned siden

    You don't really answer the question. The manufacturers definition of "acceptable life and durability" is quite different than my definition. My real concern is the ever decreasing hot viscosity numbers. The Corvette is pretty high with a 40. I contend that manufacturers really only care about warrantee period + some acceptable margin. So if an engine lasts ~100,000+ miles, that's good enough, even if a slightly heavier weight oil would increase the life to 150 or 200K. For the manufacturer trying to meet CAFE numbers, a 1% fuel economy improvement at the cost of 50,000 miles on the back-end is a worth-while trade. In most applications there is no downside to running 0W-30 or even 0W-40 over 0W-20, particularly in a hot environment. Other evidence is there are a number of high performance cars that recommend heavier weight oil for "track use" and there have been cases of manufacturers, building an engine with a lower viscosity recommendation then issuing a TSB for a higher viscosity oil (Hyundai). Never heard of it going the other way. Oh, and there are a lot more non-moving spots than just when the pistons reverse direction. All your timing chains have no real motion between the chain and sprocket, they are both moving the same direction at the same speed.

  • Aveenash Maghoo
    Aveenash MaghooMåned siden

    In mauritius temperature does not come below 10 degrees Celsius it is important to use 0w20 as recommended like the toyota Prius or honda vezel thanks

  • vilefly
    vileflyMåned siden

    The main reason thinner oils suddenly came into play is limited life engineering. Helps the economy and increases waste production........just doesn't help my family's economy at all or the environment. What people don't know is how the oiling systems in modern gasoline engines have changed. The oil pump used to be driven by the camshaft, which turns HALF the speed of the crankshaft. You could get away with murder with the oils you used then. Now, the oil pump spins at CRANKSHAFT speeds. You can't put much thicker oil in, because the pump will cavitate, and whip air into the oil. This will murder the engine sooner than later. So like the kid says, WATCH YOUR STEP! To the know-it-alls out there.....get stuffed, and go for that bargain 20W-50 oil that calls to you from that Walmart shelf. Let the thickness flow through you. Let it bathe you in self-righteousness......like a stack of pancakes with a contemptuous unrepentant cherry on top.

  • Andrés Topelberg
    Andrés TopelbergMåned siden

    Hello. If due to availability of the specific oil for my engine, I have been using a similar but not the exact recommended range. Let’s say I used 10w40 but the recommended grade is 10w30, and now 10w30 becomes available. Is it safe or is it still desirable to return to 10w30? I hope I have explained myself. Thank you!! You have great teaching skils!!

  • Killing Fields
    Killing FieldsMåned siden

    It wont, it just circulates faster to all surface it needs to. Its just that you need to change oil more often than synthetic based

  • elroy elroy
    elroy elroyMåned siden

    no but thick oil sure will

  • Papa Jon
    Papa JonMåned siden

    Thank you for the video series. My question concerns appropriate oil viscosity on high mileage engines. My Hondoo minivan was factory spec'd for 5w20 conventional motor oil 17 years and 170+k ago and has spent most of it's life performing short and slow suburban trips. Thank you so very much...

  • Registered.Murse RN
    Registered.Murse RNMåned siden

    As a racing engineer I can confirm oil works better than water as engine lube.

  • I want to believe
    I want to believeMåned siden

    What's the best oil to use with Ford Explorer 2008 Eddie Bauer V8 ?

  • Jed Taneo
    Jed TaneoMåned siden

    Just use the recommended oil specs but you can play with the viscosity depending on the climate or where you live. On a summer you can use thicker oil slightly higher than recommended. 20w-50 won't hurt the engine on a hot summer day in a bad traffic.

  • Gino Rigucci
    Gino RigucciMåned siden

    After a few gasoline fill-ups I also used to pour a 10 millilitres of additive to the gas for upper cylinder lubrication doing so I never had any emissions or engine problems, and I also changed the oil and oil filter at 5000 miles or less. Good video, thank you.

  • SalandFindles
    SalandFindlesMåned siden

    I have a 2000 Lincoln Town Car, which is recommended to use 5W-30 oil. I did a couple oil changes with that, then I went to 5W-20 because I read that Ford issued a technical service bulletin, saying you should use that instead, so I did. Nothing bad has happened so far. My fuel economy has gone up slightly, which is a win in my book with such an old car.

  • Darcy Munro
    Darcy MunroMåned siden

    In the tropics a thicker is recommended by car manufacturers for longer lasting engines and saving 1 mile per gallon ,over saving the engine

  • Chris Andrew
    Chris AndrewMåned siden

    In my country where it is always hot and stop go traffic jam is normal with outside temperature up to 35 degrees Celsius its wise not to use thin engine oil even if the manufacturer recommends it for so called fuel efficiency BS.

  • fotoigaist
    fotoigaistMåned siden

    Fformula 1 cars use vicosity 5, at 18,000 rpm. So please educate yourself before you mislead people into using thicker oil on the track.

  • Nyaywa Vernon
    Nyaywa VernonMåned siden

    as a honey Baja i can confirm that honey is think and nice in my mouth

  • BAgodmode
    BAgodmodeMåned siden

    I remember being tripped out by the fact my brand new Silverado used 0w-20. I had a 99 before I got this truck and it used 5W-30, and so did every truck I had before.

  • metalmark062
    metalmark062Måned siden

    Just use Extra Virgin Olive Oil thicker viscosity than 0W-16/20 WTF!

  • Pete Vicente
    Pete VicenteMåned siden

    Nice job!

  • Luís António Pereira Rocha
    Luís António Pereira RochaMåned siden

    Hi Janson, what about lightly modified cars? Hybrid turbo with remap for daily commute is very common in Portugal, is maintaining the brand suggestion safe?