ok i want a good high performance oil....im thinking about amsoil or royal purple...my friends dad a hot rod guy whos been in the game for a while claims that amsoil has the highest flash temp and is the best oil...what ever that really means and my other friends uncle has a 7 sec drag car and he uses royal purple...he also said that he blew a motor running on redline synthetic so i doubt im gonna use that...oh yea this is for a b18c...i want the best...im kinda leaning towards the royal purple...

 

I use royal purple in the winter- I wouldn't say it does much more than any other synthetic- unless you are doing some crazy shiet- I wouldn't even bother.