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I agree that my dealers are trying to get rid of a surplus of old VW 502 00.
In the past, the brand printed on the package of this engine oil was Castrol. Last year, it became Audi .
Thank you for your reply
My engine calls for 0w-20 VW 508, but I am using 5w-30 VW 504 instead. In the rest of the world, like Mobil.de, 502, 504 and 229.5 40 weight oils are still recommended.
VW 502 00 is the old standard, replaced by 504 00, as noted previously. VW 502 00 is not the correct oil for any engine in the B9 Audi family.
Actually, 502 00 5w-40 is the correct standard for the EA888 2.0T evo engine and the EA839 2.9T engine, in NAR. Until MY19. When Audi did a blanket drop of 502 00 and replaced it with the revised 504 00 (which is 0w-30 instead of the original 504 00 5w-30). Audi's statement "Since 2018, all of Audi’s model ranges approved according to the Euro 6d TEMP emissions standard have been equipped with gasoline particulate filters". Thus 504, since 504/507 are particulate filter friendly. Why not just leave the oil standard as regionally defined (e.g., 508 88 in South America), since GPF is a non-subject for EPA emissions? No idea. But the EA888 2.0T evo and the EA839 2.9T were initially deployed quoting a 502 00 requirement [I do wonder if it was always 504 00 in EU where flex intervals are possible if the fuel quality allows; US is always fixed intervals, even now]. The EA888 b-cycle and the EA839 3.0T were developed and deployed initially for 508 00. The sole point of that oil being emissions improvement due to the lower viscosity.
Audi's statement on the 508 00 oil choice for the b-cycle:
Engine oil 0W-20
To further reduce the friction and thereby improve fuel economy, the performance class 1 engine uses an engine oil with the 0W-20 specification in compliance with the VW 50800 and VW 50900 standards.
The new engine oil has the following properties:
• It allows faster pressure build-up because it has a low viscosity, enabling it to reach the lubrication points more quickly. In addition, it is more cost-effective for drivers with a short distance profile because less friction loss occurs in the engine (lower oil resistance).
• A chemical marker has been added to the new oil (green coloration) so it can be identified more easily in a laboratory.
• The oil is not downwardly compatible, i.e. it is only suitable for use in approved engines.
• Oil pressure builds up slightly more quickly due to the low viscosity of the oil. This is why the oil pump runs slightly more slowly in the third-generation MLBevo 2.0l TFSI engine of performance class 1. In addition, a new non-return valve is integrated in the oil filter housing.
It sound like they are not helping your confusion.
From what I've seen the 508/509 spec is 0w20. Running 5w40 in a motor requiring 0w20 can be bad since the motor and tolerances were not designed to run on that weight spec. This is all surely driven by CAFE standards and emission reduction but I'd like to believe Audi engineers also did their diligence and have designed a motor with tolerances specific to the new 0w-20 spec. They just sacrifice some potential motor longevity...but probably not enough to get excited about.
As for your parts guy I'm not sure what he is trying to say about the 0w30 thickening while the 5w40 thins...all oils thin as they heat up...just try using a suction pump on cold oil vs. hot oil. It's easiest to think of multigrade oil in terms of straight weight oils not in terms of "thickness". A 0w20 oil will FLOW like a straight 0 weight oil when cold, which is good, but will behave and PROTECT the same way a straight 20 weight oil would when hot. So you can see a 5w40 oil will offer nearly the same cold flow as a 0w oil while offering more hot level protection in a motor designed for that specific weight. Since I assume you are in a hot climate the number before the w is less critical but you still have to stick with the higher number after the w as recommended. So in theory if a 508/509 spec oil came in 5w20 or even 10w20 you might be alright, but since the oil is engineered to cover the broadest spectrum of uses they really have no need to make a 508/509 oil in such weights when 0w20 covers everyone's climate while offering the high heat protection the engineers feel is adequate to last the motor design lifetime/warranty period.
FWIW I believe since the 0w20 spec first appeared many many years ago, for other makes, that many people successfully run 0w30 without catastrophic issues, but it would be too hard to tell if there were any lifelong issues.
Hope that helps.
That chart is not a standalone reference. It's only useful if the oil spec the engine requires exists in multiple viscosities. https://operatingfluids.mercedes-ben...ory/engine-oil So start with 223 to find which document is for your engine, use that document to see what oils meet the reference, then you could use the 224 pic to narrow the selection from there.
But in the case of VAG 508 00, there is only 0w20. If at some point, someone was able to make a 508 00 compliant oil in a different viscosity, only then would you have a viscosity choice to make.
Why is this so difficult? There's a plate/sticker clearly visible when you lift the hood -- the oil is available there are specs that the mfgr says are required for their B-cycle engines. At these prices, why would anyone (any dealer) put the wrong oil in the car? If you have had your oil changed and the wrong oil was put in the vehicle, it must be changed to the right stuff. You can bet that Audi would be "unhappy" to honor a warranty claim made by an owner who "allowed" the wrong oil to be put in his/her new S4.
The problem is with your thinking. US spec oils lag behind Europe, so we use Full SAPS junk like VW 502 in EA Direct Injection engines and get....deposits! Valve and ring deposits from the extra organo-metallic additives like zink and moly DS are a plague. Dude can "pop the hood" and ask permission from their SA and get stupid answers like "VW 502". Then posters go online full of self-reightness "knowledge" and act the fool with what is basically an anti-intellectual argument.
Sorry for the crybabies lacking technical skills, I'm sorry I showed how to lower wear and deposits in a simple way, one that you nor your service advisor thought of until this exact moment. VW 502 VW 508 and VW 511 all allow higher wear and deposits. 508 only exists for the EPA MPG test, so Audi must recommend it by law.
No it's too simple, people rather listen to grease monkey advice based on old wives takes, speculation, bluster etc etc ad infinitum. Mechanics are the worst source of lube info. I just heard from some goofball about how race oil is the best way to go in a 2.0T....completely oblivious of it's SL spec and how that compares to 504, the top spec in the industry. Hilarious.
I'm not so much in the mood with this old thread, but whatever.
Actually, 502 00 5w-40 is the correct standard for the EA888 2.0T evo engine and the EA839 2.9T engine, in NAR. Until MY19. When Audi did a blanket drop of 502 00 and replaced it with the revised 504 00 (which is 0w-30 instead of the original 504 00 5w-30). Audi's statement "Since 2018, all of Audi’s model ranges approved according to the Euro 6d TEMP emissions standard have been equipped with gasoline particulate filters". Thus 504, since 504/507 are particulate filter friendly. Why not just leave the oil standard as regionally defined (e.g., 508 88 in South America), since GPF is a non-subject for EPA emissions? No idea. But the EA888 2.0T evo and the EA839 2.9T were initially deployed quoting a 502 00 requirement [I do wonder if it was always 504 00 in EU where flex intervals are possible if the fuel quality allows; US is always fixed intervals, even now]. The EA888 b-cycle and the EA839 3.0T were developed and deployed initially for 508 00. The sole point of that oil being emissions improvement due to the lower viscosity.
Audi's statement on the 508 00 oil choice for the b-cycle:
More like 502 WAS the "correct" oil (for compliance and market availability reasons). How can a service advisor look you in the eye and tell you obsolete 502 is the "correct" oil or do they mean "right oil" or do they mean "best oil"??? You want the best right? Don't listen to a SA who has no clue. Don't listen to anybody who never did a UOA lab report of their own. Don't listen to anybody who has done too many UOA lab reports either.
08-05-2022, 08:01 AM
lol
