Anyone use Formula shell motor oil? I was surprised to learn that Shell manufactures Pennzoil, Quaker-state. Could Formula Shell be the same as Pennzoil? Would any of you recommend the Formula shell oil?
Anyone have experience with Vavoline full synthetic? Good, bad or stay with Mobil1?
corrected word
[ May 22, 2006, 10:17 PM: Message edited by: Bio-T ]