ok so i was going to use havoline but interestingly enough no one locally carries it. seems like around here its getting harder and harder to find. im not really a big fan of sopus after finding out they are very uhmmm not nice to small business ect ect. i wouldnt mind using mobil but unless i want mobil 1 i cannot get their dino in my town either. i like valvoline but its over priced and their customer support is very short and not very friendly. also my old chevy would tick with valvoline but no other oil . kinda made me question valvoline some. gave me an uneasy feeling. so now i was thinking i could try castrol gtx. why does castrol not get alot of love on here? please inform me . thanks guy