New Mobil 1 C40 GT 0W-40

Mainia said:
Semi pro ice racing on Minnesota lakes when it is -28.
Click to expand...
How is that relevant? 0W is cold pumping measured at -35. That does not mean 5W cannot operate at lower temperatures.
Then, no racing engine is started just before race. They will start before that, probably in garages. After that, it is irrelevant whether it is -28 or -50 outside or whether oil is 0W or 15W.
 
edyvw said:
How is that relevant? 0W is cold pumping measured at -35. That does not mean 5W cannot operate at lower temperatures.
Then, no racing engine is started just before race. They will start before that, probably in garages. After that, it is irrelevant whether it is -28 or -50 outside or whether oil is 0W or 15W.
Click to expand...
It’s called not understanding the question.
 
edyvw said:
There are A LOT of oils missing from that list.
Click to expand...
Makes it easier when people come and post what oil is best for my xxxx? We can nitpick a smaller list of approved/licensed as other group says to heck with Porche, they're (throw in a myriad of engineers are dweebs, CAFE makes the rules, Marketing makes the rules, Beancounters make the rules, I wear a tinfoil hat etc, etc, etc.).
I vote Rotella in your Porche 'cause some guy on tick-tock puts it in his Harley.
 
CleanSump said:
Makes it easier when people come and post what oil is best for my xxxx? We can nitpick a smaller list of approved/licensed as other group says to heck with Porche, they're (throw in a myriad of engineers are dweebs, CAFE makes the rules, Marketing makes the rules, Beancounters make the rules, I wear a tinfoil hat etc, etc, etc.).
I vote Rotella in your Porche 'cause some guy on tick-tock puts it in his Harley.
Click to expand...
No, I mean there are bunch of approved C40 oils that are missing.
Motul has Specifc C40 and it is not on the list. There is no way Motul will list something as approved but it is not.
They stopped sale of SN oils when SP hit the road.
 
edyvw said:
No, I mean there are bunch of approved C40 oils that are missing.
Motul has Specifc C40 and it is not on the list. There is no way Motul will list something as approved but it is not.
They stopped sale of SN oils when SP hit the road.
Click to expand...
Don't know the answer. I see if it's C40 it's supposed to be Porsche approved. So it doesn't make sense to not list all approved oils.
Edited because I was stupid.
 
CleanSump said:
Doesn't Porsche require the oil be submitted for their in-house testing, which includes tests beyond C40 before they'll make it "approved" for Porsche?
Click to expand...
Depends on blender.
Motul? Probably not. Motul will buy additive package from Infineum, and submit request for approval with documentation.
Company I worked for was smaller blender. We had to submit samples for testing to all manufacturers.
And manufacturers will check samples from stores, at least that was the case 20yrs ago.
So, it is at manufacturer discretion how they approve oil.
 
Said before, but Porsche oil recomendations are suspect. When they came out with C40 GT and said it should used on all 991 generation GT 911s and newer. Previously they said C40 oils used in A40 spec'd cars (911.1 GTs) should not be used, and in certain language would void warranty.

That being said C40 GT is a great oil.
 
edyvw said:
No, I mean there are bunch of approved C40 oils that are missing.
Motul has Specifc C40 and it is not on the list. There is no way Motul will list something as approved but it is not.
They stopped sale of SN oils when SP hit the road.
Click to expand...
The list was accurate at the time of publication, but there are indeed some oils that are back on the latest list (or more correctly the latest one that I've sighted - see below). I posted recently on another thread that the Motul X-Clean gen2 was reformulated to meet SP in 2024, so the C40 approval was dropped and the Specific C40 now carries the approval. There was a brief period when Motul did not have an approved oil and that seems to have coincided with the publication date of the list previously linked. The previously approved Ravenol RUP has been completely dropped.

C40 page 1.webp

C40 Page 2.webp
 
You must log in or register to reply here.

Similar threads

PAOtown
Mobil 1 ESP X4 0W-40 vs Mobil 1 ESP 0W-40
2 3 4
Replies
68
Views
6K
tired
buster
Mobil 1 ESP - 12,000 miles / 1 year
2 3 4
Replies
60
Views
4K
edyvw
T
Q: About today's Mobil 1 0W-40 line up
6 7 8
Replies
157
Views
19K
RedEnsign
S
Mobil 1 ESP 5w30 without vw- porsche approvals now?
2
Replies
20
Views
3K
altaylar
A
Mobil 1 ESP X4 vs Mobil 1 Full Synthetic 0w-40 for catless
Replies
19
Views
2K
kschachn
Back
Top Bottom