[wfo]

Why do we think we know better than the engineers at GM?

Mobil 1 is what GM engineers spec'd this car to use. It's also what they spec'd the Corvettes..the coupes, convertibles, Z06 and ZR-1 too. It's also what the C6R Corvettes at the 24 HR LeMans use as well.

So again, why do we insist on recreating the preverbial wheel? Experiment, In my humble opinion..don't do it with high priced equipment. Even if someone you trust says it's OK.