Originally Posted By: OVERKILL
Originally Posted By: BlazerLT
Originally Posted By: OVERKILL
Why? The measure of cold temp pumpability is MRV and the effect it has on cranking speed is measured through CCS. The oil carries the 0w-xx designation that guarantees it pumps at -40C as Shannow already mentioned, that's all that is really important here.
IMHO, the "best" cold temp performance in this grade should be had in M1 EP 0w-20, with its 70% PAO base, guaranteeing exceptional cold temp performance, but we can't get that up here at this time.
Very very interesting.
100C vis .... 8.8 cSt
40C vis .....39.3 cSt
VI .......... 214
Flash Pt .... >200C
HTHS ...... 2.6 cP
CCS @ -35C ..... 5,700 cP
MRV @ -40 .... 18,000 cP
This is the latest information I have seen which is 6 years old.
Is a MRV @ -40 at 18000cP poor? -40c would be the lowest extent of temperatures here. I know this winter it did pretty well and always started very well.
Just want to make sure I don't have my head in the sand.
Well, in comparison, M1 AFE 0w-20 that you can buy anywhere has an MRV of basically half that at 9,200cP. Pour point is -48C. Mobil doesn't list MRV for the EP version, but the pour point is -54C.
With its low pour points, could both M1 AFE/EP 0W20 be having MRV of SAE?