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Thread: Mobil 0w40 vs Mobil 10w40 High Mileage

  1. #26
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    Quote Originally Posted by sprintman View Post
    Multiple UOA's I've read show M1 0W40 shears to a 30W over time and thickens back to a 40W if used long enough. Still it's better than using low spec 5W30 as so many here do.
    LOL, a "0" thins out to "30" but gets back up to "40" if you leave it in long enough, do you have to add some cornstarch? I bought some "4wd" oil for my M coupe but it still won't spin the front tires??

  2. #27
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    Sprintman is right that oil can start as a 40, shear down to a 30 in use and then load up with contaminants to the point where it becomes a 40 again. I don't think it happens in these cars for a long long time, but it can happen. I once ran the BMW 5w30 in my Mini for 12k miles to see if it could take it, as BMW says it can, and that stuff came back from the lab thicker than when it came out of the bottle. It was almost a 10 and was solidly into a 40 weight when warm. Never again.

  3. #28
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    Quote Originally Posted by 325bob View Post
    LOL, a "0" thins out to "30" but gets back up to "40" if you leave it in long enough, do you have to add some cornstarch? I bought some "4wd" oil for my M coupe but it still won't spin the front tires??
    You just showed your ignorance to a worldwide audience. Why would one do that?

  4. #29
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    Lets try to keep it civil. Heres a list of BMW approved oils. /End of thread


    ADDINOL Super power MV 0537 SAE 5W-30 Addinol Lube Oil GmbH
    Agip Formula LL B 01 SAE 0W-30 ENI S.p.A.Refining and Marketing Division
    Agip Sint 2000 Evolution SAE 5W-40 ENI S.p.A.Refining and Marketing Division
    Agip TECSINT SL SAE 5W-40 ENI S.p.A.Refining and Marketing Division
    Aral SuperTronic SAE 5W-30 Aral
    AXCL S-Class Motor Oil SAE 0W-30 AXCL Gulf FZE
    BP Visco 7000 SAE 0W-40 BP Oil International
    BP Visco 7000 Special SAE 0W-30 BP Oil International
    BP Visco 7000 Turbo Diesel SAE 0W-40 BP Oil International
    SBS 5.0 "Longlife-01" BMW AG - TIS 26.12.2004 21:36
    Castrol Formula SLX LL01 SAE 0W-30 Castrol Limited
    Castrol Formula SLX Turbo Diesel SAE 0W-30 Castrol Limited
    Castrol Formula RS Power and Protection SAE 0W-40 Castrol Limited
    Castrol Syntec SAE 0W-30 Castrol Limited
    Castrol Super Racing 0W-40 SAE 0W-40 Castrol Limited
    Castrol TXT Softec LL01 SAE 5W-30 Castrol Limited
    Cepsa Star Mega Synthetic SAE 0W-30 Cepsa Lubricantes S.A.
    Elf Excellium LDX SAE 0W-30 Total
    Formula Shell Ultra AB SAE 5W-30 Shell International Petroleum Company
    Gulf Formula TLX SAE 0W-30 Total
    Havoline Synthetic BM SAE 0W-30 Texaco
    Igol Process Compact P SAE 5W-30 Igol France S.A.
    Jet Top Level SAE 0W-40 ConocoPhillips GmbH
    Labo RC SAE 0W-30 Fuchs Labo Auto S.A.
    Liqui Moly Longlife High Tech SAE 5W-30 Liqui Moly
    megol Motorenöl New Generation SAE 5W-30 Meguin GmbH
    Mobil 1 SAE 0W-40 ExxonMobil
    Mobil 1 Turbo Diesel SAE 0W-40 ExxonMobil
    Motorex Profile B-XL SAE 0W-30 Bucher AG
    Motorex Select SP-X SAE 5W-30 Bucher AG
    Motul Specific LL-01 SAE 5W-30 Motul S.A:
    OMV full syn plus SAE 5W-30 OMV AG
    Pennzoil European Formula Ultra SAE 5W-30 Pennzoil Quaker State
    Pentospeed 0W-30 VS* SAE 0W-30 Deutsche Pentosin-Werke
    Petronas Syntium 3000 LL SAE 5W-30 Petronas
    Q8 Formula Special SAE 0W-30 Kuwait Petroleum
    Quaker State European Formula Ultra SAE 5W-30 Pennzoil Quaker State
    Satoil LazerWay B SAE 5W-30 Svenska Statoil AB
    Shell Helix Ultra AB SAE 5W-30 Shell International Petroleum Company
    Titan Supersyn SL SAE 0W-30 Fuchs Petrolub AG
    Valvoline SynPower MXL SAE 0W-30 Valvoline
    Veedol Powertron LL01 SAE 5W-30 Veedol International
    Veedol Syntron SAE 0W-30 Veedol International
    Wintershall VIVA 1 Longlife SAE 5W-30 SRS Schmierstoff Vertrieb GmbH
    Yacco VX 1600 SAE 5W-30 Yacco S.A.S.

  5. #30
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    Quote Originally Posted by sprintman View Post
    You just showed your ignorance to a worldwide audience. Why would one do that?
    Look up "sarcasm" to alleviate your"ignorance" regarding same. and I still haven't ever seen hot oil that was thinner cold,after 150 cars.

  6. #31
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    Quote Originally Posted by 325bob View Post
    LOL, a "0" thins out to "30" but gets back up to "40" if you leave it in long enough, do you have to add some cornstarch? I bought some "4wd" oil for my M coupe but it still won't spin the front tires??
    Quote Originally Posted by sprintman View Post
    You just showed your ignorance to a worldwide audience. Why would one do that?
    cause he is a funny American,,


  7. #32
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    Quote Originally Posted by jp5Touring View Post
    cause he is a funny American,,
    Funny American is an oxymoron

  8. #33
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    Quote Originally Posted by sprintman View Post
    Funny American is an oxymoron
    no," Mexican American" is an oxymoron, and I hear it frequently on national media sites., its my pet peeve, any north south or central American person is just as "American" as any United States citizen. I'm a Marylander.

  9. #34
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    I've got a 540i/6, 135k.

    I've always run Mobil 1 0w40, but I'm considering trying out the M1 High-Mileage synthetic.

    http://www.mobiloil.com/USA-English/...age_5W-30.aspx

    Site says it's has a higher level of detergent plus seal conditioners. Thought I'd give it a try and see if it helps with my a slight oil pan leak, and perhaps it will clean out some sludge too.

    Please don't reply that I should just replace the gasket - its on my todo list.

    I'm in SoCal, so no chance the car will be in weather lower than 50 degrees or higher than 85 before my next change.

    Any experience with M1 high mileage oils? I believe 0w40 is the only one that meet BMW specs, but Mobil 1 is a high quality product throughout the range...

  10. #35
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    One meets spec and one doesn't so a simple choice
    Last edited by felicitero; 12-29-2012 at 10:02 PM.

  11. #36
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    Quote Originally Posted by zeeth2800 View Post
    castrol 5-40 german formula.
    best oil for I6 bmws in my opinion.
    This is usually what I use

  12. #37
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    Quote Originally Posted by OnTheFence View Post
    Manual says to use 5w30. So, that's what I use.
    Yeah but which 5W30? Castrol alone have 22 different 5W30's on their web site. Does your 5W30 of choice meet spec?

  13. #38
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    Where are you guys finding your Mobil1 0W40?? High Mileage or normal...
    '08 Chevrolet Corvette / '04 BMW 325xi



  14. #39
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    oil arguments are even more fun than turbo arguments.
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  15. #40
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    This was a fun read....0-40,5w-30,10w-40,15w-50,20w-50....all oil weights from Mobil 1 all good. More than particular weight its about changing it on time. If your serious about getting it right.....go buy oil at the dealer in the weight they recommend.

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  16. #41
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    Quote Originally Posted by z3540i View Post
    This was a fun read....0-40,5w-30,10w-40,15w-50,20w-50....all oil weights from Mobil 1 all good. More than particular weight its about changing it on time. If your serious about getting it right.....go buy oil at the dealer in the weight they recommend.
    Useless, as many dealers are using/selling the wrong spec oil, often
    M1 5W30. If dealers can't work it out no wonder ordinary punters have trouble.

  17. #42
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    Everyone shut up and stop talking about oil.

  18. #43
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    Quote Originally Posted by timsev View Post
    Everyone shut up and stop talking about oil.
    I like oil!

  19. #44
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    High millage oil swells seals. If you have never used it don't, if you started - don't stop or you'll get leaks.

    Sent from Android
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  20. #45
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    Ill blow minds....some times i put in 4 qts. Of 10w-40 high mileage then 1 qt of 15w-50....top it off if it needs with 5w-30... why?! Bc that's what i have in the garage

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  21. #46
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    M1 10w40 HM is good oil. Speaking of which, using BMW approved oils as a source is almost laughable. They change on a regular basis... my manual states that any ACEA A3 oil is approved for use in my M62. Using the LL recommendations is only applicable if *gasp* you run BMW's recommended OCIs which I bet few here do. Furthermore, just because an oil fails to appear on the list does not disqualify it from potential use. Do your research and choose an appropriate oil that meets your individual needs.
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  22. #47
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    Quote Originally Posted by sprintman View Post
    Your manual says to use 5W30 that meets LL01 eg BMW 5W30, it doesn't mean any old 5W30



    M1 10W30 is a very thin 30W oil compared to many other 30W's, so not surprising it used some. Thicker 30W's would probably have fared better
    Example of some one that has a clue.

    Quote Originally Posted by 325bob View Post
    HUH!?, the 1st # is supposedly the actual viscosity, 2nd# is retained film strength at operating temps, ideally we need a magic oil thats 0W at -20F(Alaskan cold start) but thickens to 20w at 250F, unfortunately this flies in the face of physics where most liquids thin as they warm up.You gotta laugh at the "high mileage oil", if you used it at low mileage, you wouldn't need it later on!, I'd rather buy a catalytic convertor than an engine.
    Example of someone that is trying to have a clue.
    Last edited by rdorman; 01-18-2013 at 02:11 PM. Reason: Automerged Doublepost

  23. #48
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    Quote Originally Posted by Cyrix2k View Post
    M1 10w40 HM is good oil. Speaking of which, using BMW approved oils as a source is almost laughable. They change on a regular basis... my manual states that any ACEA A3 oil is approved for use in my M62. Using the LL recommendations is only applicable if *gasp* you run BMW's recommended OCIs which I bet few here do. Furthermore, just because an oil fails to appear on the list does not disqualify it from potential use. Do your research and choose an appropriate oil that meets your individual needs.
    Maybe, but how many punters understand oil specs?

  24. #49
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    Multi-weight oils (such as 10W-30) are a new invention made possible by adding polymers to oil. The polymers allow the oil to have different weights at different temperatures. The first number indicates the viscosity of the oil at a cold temperature, while the second number indicates the viscosity at operating temperature.

    Multi viscosity oils work like this:
    Polymers are added to a light base (5W, 10W, 20W), which prevent the oil from thinning as much as it warms up. At cold temperatures the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot.

    Multi viscosity oils are one of the great improvements in oils, but they should be chosen wisely. Always use a multi grade with the narrowest span of viscosity that is appropriate for the temperatures you are going to encounter.

    The wide viscosity range oils, in general, are more prone to viscosity and thermal breakdown due to the high polymer content. It is the oil that lubricates, not the additives. Oils that can do their job with the fewest additives are the best.

    0W30 is the same viscosity range as 20w50 but they are not equal.
    The 20W50 is better, due to the fact that it starts with a heavier base and it requires less viscosity index improvers (polymers) to do the job
    Last edited by vinnie328; 01-25-2013 at 03:45 PM. Reason: Forgot some info

  25. #50
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    Quote Originally Posted by vinnie328 View Post
    Multi-weight oils (such as 10W-30) are a new invention made possible by adding polymers to oil. The polymers allow the oil to have different weights at different temperatures. The first number indicates the viscosity of the oil at a cold temperature, while the second number indicates the viscosity at operating temperature.

    Multi viscosity oils work like this:
    Polymers are added to a light base (5W, 10W, 20W), which prevent the oil from thinning as much as it warms up. At cold temperatures the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot.

    Multi viscosity oils are one of the great improvements in oils, but they should be chosen wisely. Always use a multi grade with the narrowest span of viscosity that is appropriate for the temperatures you are going to encounter.

    The wide viscosity range oils, in general, are more prone to viscosity and thermal breakdown due to the high polymer content. It is the oil that lubricates, not the additives. Oils that can do their job with the fewest additives are the best.

    0W30 is the same viscosity range as 20w50 but they are not equal.
    The 20W50 is better, due to the fact that it starts with a heavier base and it requires less viscosity index improvers (polymers) to do the job
    Yep VI's shear and voila sludge!

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