C40 Oil Discussion
#136
Rennlist Member
But the reality is we here are the minority, I suspect 80% of their customers simply don't care and quite honestly it won't be a problem. Oil related failures are so rare now that these discussions are really academic. 10 years from now on a tear down I'd hazard a guess that even the best trained engine guy couldn't differentiate between the car with a 100% C40 diet vs. an A40 diet.
Last edited by mjw930; 12-22-2020 at 09:44 AM.
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minn19 (12-22-2020)
#137
Racer
For those that may want even further reading on the A40 vs C40 debate, here is another thread to look at from last year.
https://rennlist.com/forums/718-foru...tor-oil-4.html
#138
Rennlist Member
Last edited by minn19; 12-22-2020 at 10:44 AM.
#139
Rennlist Member
#140
RL Community Team
Rennlist Member
Rennlist Member
Yes, which begs the question, if the A40 oil was good enough before, why all of a sudden is it not? I know oils evolve and better oils are rolled out and recommended for older cars, but if A40 was okay for a 2019 Porsche Cayman and now it's not, then something is fishy. I am willing to bet that virtually every Porsche with a 2019 build date received A40 oil from the factory and the dealer .
And again it not only about the GPF...
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Balloonmeister (12-22-2020)
#141
Pro
I am not sure what is so confusing, looking at the list the 9A2 engine in the Carrera is listed as requiring the C40... it makes sense that the 9A2 Evo 4.0l in the 718 require it as well.
Bill, it seems that you do not want to accept that things move on and there is a new spec for the oil in these cars, nothing fishy, simply an improved formulation...
And again it not only about the GPF...
Bill, it seems that you do not want to accept that things move on and there is a new spec for the oil in these cars, nothing fishy, simply an improved formulation...
And again it not only about the GPF...
#142
Rennlist Member
Motul 8100 X-Clean Gen 2, Porsche C40-spec oil is readily available on Amazon for $12/L or $49/5L.
https://www.amazon.com/Motul-8100-X-Clean-Gen2-Liter/dp/B08NWJXMNY/ref=sr_1_16?dchild=1&keywords=Motul+8100+X-Clean+Gen+2+Porsche+C40&qid=1608652350&sr=8-16
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0-Day (12-22-2020)
#143
Racer
Not to be a smart *** but you may wish to stick to the guidance for FY21+ cars but if your servicing dealer is unwilling or unable to provide C40 spec oil you're SOL. And to be clear, you can "demand" whatever you want with the service writer but unless you physically inspect what the technician is putting into the car you have absolutely no guarantee they didn't put A40 oil in regardless what they tell you.
#144
Burning Brakes
only that after reading both threads I’d got my head around that the C40 formulation was needed for the GPF whereas that bulletin clearly cites it for non-GPF NA models - so either they’re aiming for consistency for logistic reasons or else there are other reasons such as the Low Speed PreIgnition mentioned in the 718 article 🤪
#145
RL Community Team
Rennlist Member
Rennlist Member
only that after reading both threads I’d got my head around that the C40 formulation was needed for the GPF whereas that bulletin clearly cites it for non-GPF NA models - so either they’re aiming for consistency for logistic reasons or else there are other reasons such as the Low Speed PreIgnition mentioned in the 718 article 🤪
Applications
Mobil 1 ESP X3 0W-40 is recommended for high-performance engines requiring GPFs (gasoline particulate filters).
• Mobil 1 ESP X3 0W-40 can only be used in the vehicles for which it is approved. It is not backward compatible with vehicle engines requiring an A40,
C30 or C20 . ***
*** Always consult the owner's manual of the vehicle for the manufacturer's recommended viscosity grade and specifications
Mobil 1 ESP X3 0W-40 is recommended for high-performance engines requiring GPFs (gasoline particulate filters).
• Mobil 1 ESP X3 0W-40 can only be used in the vehicles for which it is approved. It is not backward compatible with vehicle engines requiring an A40,
C30 or C20 . ***
*** Always consult the owner's manual of the vehicle for the manufacturer's recommended viscosity grade and specifications
#146
Burning Brakes
Plenty of material here for future class action should engines start playing up !
#147
Rennlist Member
Yep seen that one - overall it points to the fact that Mobil and Porsche should have got their story straight and their oil distribution sorted before rolling out the latest models - maybe they’re so electrified by the Taycan and hybrids that they think oil matters less important than Charging Stations.
Plenty of material here for future class action should engines start playing up !
Plenty of material here for future class action should engines start playing up !
Not being backward compatible is confusing and without documentation on why it's total speculation..
#148
Three Wheelin'
I agree with Bill.
What happens when your inert GPF is removed in favor of an aftermarket solution, or eliminated as described by one of our more popular threads for a paltry some of $10 of beer and some your time?
What happens when your inert GPF is removed in favor of an aftermarket solution, or eliminated as described by one of our more popular threads for a paltry some of $10 of beer and some your time?
#149
Burning Brakes
Great thread though !
#150
RL Community Team
Rennlist Member
Rennlist Member
The GPF is not the only consideration, there are other emission systems in place on these cars, I am curious If the C40 oil was as readily available as A40 would this even be a discussion?