Quote: I beleive a lot of the high dollar imports, Lexus, BMW, Jaguars, Mercedes Benz as well as some others come from the factory with pure sybthetic oils in the engines. I think that maybe some American cars do also, maybe not I know a lot of NHRA class racers swore that there cars pick up ET and MPH when they switch to multi viscoty synthetic oils
Corvettes come with Mobil one for sure. Still don't think it's any better for regular use. Higher RPM for the same viscosity? I'd have to see that to believe it. No difference in my junk. It's better in extreme heat conditions that street or drag motors are unlikely to see.
I know a lot of NHRA class racers swore that there cars pick up ET and MPH when they switch to multi viscoty synthetic oils 
