Originally Posted By: AnarchyX
I recall in the early aughts they were one of the first, or few, car companies that required 5W20 for their cars. Now they seem to have gone to where most everyone has always been, namely 5W30.
Anyone know why the change?
The explanations I have seen cite fuel dilution in the direct injection turbo engines as the primary driver.
On the V8 I would think that they got some engines back with excessive wear or some other problem that increased viscosity corrects. The V10 mentioned has a robust oil cooler I think so the 5w-20 doesn't thin out of grade. I don't know if the V8 has a cooler or not but I'm guessing that is the difference
I run 10w-30 in everything here in FL. If I had an ecoboost I would run 10w-30 in it also