(onerabidshark @ Nov. 01 2006,07:07) I read an article from a chemist that used to be with some oil company in Houston area he said (and this was about motorcycles) considereing most change their oil every 2-3000 miles there is no dif in Dino vs Synthetic oil because they give the same protection up to that point its after that that the synthetics actually show their life, his words are if you feel better about synthetics use them, just spend extra money is all, but dino oil is just fine as long as you change your oil on the sceduled maintenance(a must) his top pics in oil (dino and synthetics no order here either he said it didn't matter) all full synthetics, Castrol GTX, Delo 400, penzoil heavy duty, the cheap stuff at walmart is good oil, his personal fav(for motorcycles) is Shell Rotella T, we use it in our 18 wheelers here where I work
but once again it boils down to you whatever you decide, I use castrol GTX 20-50