the best oil under six bucks a quart? Am I hearing that it's better then GC for general automotive use? Better than PP and the version of Amsoil that's the same price? After all, Mobil 1 is the official oil of NASCAR, right? Could all these Mobil 1 supporters be wrong? The ads on TV are kind of interesting. I don't see Amsoil or GC on TV, and PP either. It must be common knowledge that Mobil 1 is better, and what can you say against that?