Originally Posted By: gabriel9766
another Q. the old myth of switching between dino oil and syn oil is a myth. switching between diff syn brands is no problem?
No prob at all. I switch brands almost every oil change as I run what syns I buy on clearance. Nothing wrong with the Castrol Gold bottle. I'm running it right now in my Silverado and all is well. I like oil that is on sale, I stocked up on EDGE EP and PUP at the Autozone clearance in December.
In reality there is little difference in quality or protection between the majors. PP, QSUD, EDGE, Synpower, M1, PUP, Kendall, Havoline, ETC...ETC.. If you want to try the EDGE do it. Your engine wont care if you run the EDGE EP or PP.
Any of the above oils will take an engine farther than most of us will drive one single car.