Is there a generally regarded "best" oil for the 5.7 engines? I know for Audi you should run (not walk) from what the dealer's use and only ever use Motul 8100, amazing oil that's also cheaper than the more well marketed brands. Anyways, any pro star hemi heads out there that swear by a particular brand and grade of oil? I heard going thicker viscosity is the answer, but I really don't agree with that. Don't you just want a "better" oil that's the right grade that Ram says to use so that it can get up into the roller pins?