yeah i hear that platnum 4 my ass lol ... i used mobil 1 as soon as i bought my truck i dunno what was in it before but my freind def took care of it doin oil changes regualrly and shit i bought it off a freind he had to sell it because he was goin to iraq ... i was just wonderin if ppl use it becasue they like purple oil or do they think it actually increases power