Trust me, it's all mental. Redline has a higher boiling point than Amsoil. Either way, their both way above what any streetable car is cable of breaking down. Unless they race their car over and over and over for days. The only thing I don't like about Amsoil is if you type in " Oil test " in goggle or your search engine. You have bombarded with Amsoil ads with them shoving their product down your throat. Just one link after another of just them. Redline doesn't not need to go that route.