Maybe I just suck at the search function, very likely, but if seen plenty of threads arguing over Amsoil 10w-30 vs Motorcraft 5w-20. I've got a track pack GT, but from what I understand, there's no real reason to run the 5w-50. I live in Hawaii, so I'm not really racing the car, aside from occasional highway pulls, but I couldn't find the Amsoil anywhere that I've checked so far, so I'm wondering what people would pick as an alternative. Thanks guys, and sorry if I'm beating a dead horse here!
Paul
Paul