Originally Posted by drkchocolate07
Thank you but my I ask why did you switsh from mobil to castrol? And is full synthetic really as good as everyone says it is?
no particular reason, the shop i work at stocks castrol and when i put my new motor in, i just poured what we had in stock in it, i approve of castrol or mobile 1, but once i use an oil on an engine, i dont switch to another brand.
what ive been told about the royal purple,particular the thin ones like 5w-20, is that it is so slick that it doesent create the film on the bearings and cylider walls because it doesentstick as much, kinda like putting water on a freshly waxed car, it doesent stay covering the whole surface, it beads and runs down.i cant see that being good for a piston ring.