Originally Posted By: Rick20
Great. So what will Mobil 1 be next year, Group IV, part group III, mostly group III? I am not posting here to debate whether or not M! is a great, good, or okay oil. But it seems to me that the transparency rules of the mere definition of what comes into play regarding the badging of full synthetic oils is far from transparent. After all, we have seen diester, triester bottling labels in the past all associated with one brand name. Is it too much to ask the manufacturer whether or not it is all group IV or not?
What does this have to do with it cleaning my engine?
And with a pour point of -65F, I'm pretty sure M1 10W-30HM is mostly Group IV/V...