Yeah I guess the question, is C20 actually not good for the engine?
Using Porsche C30 instead of C20 in the EA839 engine
- Thread starter FlyPenFly
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| Pour Point, °C, ASTM D97 | -51 |
lots of PAO it seems,has good base stock,i guess its good for everyday use.i would keep it for 2000 miles
You have to assume it's fine unless otherwise noted via owner reports of lubricant related repairs. However a C30/C40 would obviously provide more cushion under extreme conditions.
In the end the death of these cars will be plastic coolant/oil components and suspension which become cost prohibitive to replace.
I think the plan is to just run it until 5k miles or if I have an autocross or track day, then switch to a C30 (probably M1 5w30 ESP Euro) before the day.
Just use ESP X4 0W-40, it is much better for this use than the ESP 5W-30. It is not much thicker, 0.3 HTHS, but it is preferred in 911 for a reason. I'm not sure what the concern is.
Yeah, price difference is $60 vs $120 so not a big deal either way.
Interesting caveat Mobil put:
• Mobil 1™ ESP X4 0W-40 can only be used in the vehicles for which it is approved. It is not backward compatible with vehicle engines requiring a C30 or C20. ***
It is a C40 oil.
It's just CAFE nonsense. I have been running it or similar in a car that came with 0W-20 for 2 years now.
Drive a porsche like a porsche and you're good with C40. Drive it like a church lady to costco and back and you're good with C20. C30 is a reasonable compromise between the two.
C30 is effectively legacy and the C40 is barely thicker by HTHS. There is no point to C30. ESP X4 is just better if you can afford it and find it. If you are not ok with 3.8 HTHS why be magically ok with 3.5. Porsche's own PDFs somewhere even say the ESP X3/X4 0W-40 got better fuel economy vs the ESP 5W-30.
Yup IF you can get a VW511 in the USA (Ravenol RUP and Mobil1 ESP X4 seem to be it) then go right ahead and use that.
Funny thing is Audi has a Porsche designed V8 engine and they spec 504 / 0w30 in theirs instead of 511.
Porsche stops with speccing C30 on the Cayenne V6, they don't spec it for any V8 that I'm aware of, just C40 which is analogous to 511 / MB229.52 and quite a lot of oils speccing one spec the other two.
Not entirely sure what Audi is doing but I’m pretty sure you’re going to see C20 and C40 exclusively for Porsches until C12 becomes a thing. I just don’t see where C30 fits. BMW at least had the foresight to ignore grades and specify HTHS alone so LL-01 and LL-04 make complete sense and can be a 30 or a 40.
I think they're like "we are using 0w20 and 0w30 for all our other cars, we don't want to make our dealerships carry inventory of a barrel of 0w40 511 oil just for the very few v8 cars they'll get for service". So more a supply chain cost cutting measure to standardize on one or maybe two oils across all their cars.
Was cleaning out the garage and found ten bottles of 2 year old M1 Euro 0w40, unopened. Thinking I might just use this since I don’t have a GPF?
It’s Porsche A40, usually use in my 718 GTS but I just had that oil changed. Might as well use it on this EA839 v6 turbo.
It’s Porsche A40, usually use in my 718 GTS but I just had that oil changed. Might as well use it on this EA839 v6 turbo.
It will be fine.
That is a superb oil, go right ahead especially with no GPF stick to those older spec vw502 / a40 oils.
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I have a 2018 Audi SQ5 with this engine. I’ve been using Amsoil’s VW508 0W20 oil in it since it came out. With 133,000kms, the engine sounds and performs like new and uses zero oil over a 8000km OCI. Mileage is great at an average of 9.18L/100km. I’ve also done a couple of UOAs on this car, all coming back great. I live in northern Canada (Edmonton), very cold winters with this car being a daily driver. I have been concerned about the possible rocker arm issue as my car’s build has this flaw (nothing yet 
)
I’ve been thinking about going to Amsoil’s C30 0W30.
Most advice I’ve seen is to stick with what works. I’m not sure what to do?
)I’ve been thinking about going to Amsoil’s C30 0W30.
Most advice I’ve seen is to stick with what works. I’m not sure what to do?
edyvw
$50 site donor 2025
0W30 will give you more protection margin. Pushing vehicle, towing etc.I have a 2018 Audi SQ5 with this engine. I’ve been using Amsoil’s VW508 0W20 oil in it since it came out. With 133,000kms, the engine sounds and performs like new and uses zero oil over a 8000km OCI. Mileage is great at an average of 9.18L/100km. I’ve also done a couple of UOAs on this car, all coming back great. I live in northern Canada (Edmonton), very cold winters with this car being a daily driver. I have been concerned about the possible rocker arm issue as my car’s build has this flaw (nothing yet
I’ve been thinking about going to Amsoil’s C30 0W30.
Most advice I’ve seen is to stick with what works. I’m not sure what to do?
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Thanks for the info
I’d probably switch to C30 or C40 although given your extreme winter climate maybe the average C30 is better for the top end on those incredibly cold starts. Amsoil is probably a good choice or any other with high PAO and good CCS/MRV.I have a 2018 Audi SQ5 with this engine. I’ve been using Amsoil’s VW508 0W20 oil in it since it came out. With 133,000kms, the engine sounds and performs like new and uses zero oil over a 8000km OCI. Mileage is great at an average of 9.18L/100km. I’ve also done a couple of UOAs on this car, all coming back great. I live in northern Canada (Edmonton), very cold winters with this car being a daily driver. I have been concerned about the possible rocker arm issue as my car’s build has this flaw (nothing yet
I’ve been thinking about going to Amsoil’s C30 0W30.
Most advice I’ve seen is to stick with what works. I’m not sure what to do?
TBH we haven’t seen many instances where an oil can successfully band-aid a design flaw, so you could be justified in staying with your current oil if you don’t drive hard or push oil temps high often.
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