quote:
Originally posted by buster:
Synthetic oils don't cause leaks, they expose them. As your engine ages, the engines seals age and change. Somtimes with using dino oils, their is a build up on them. When you put a high detergent synthetic in like Mobil 1, Amsoil/RL etc, it will clean spots that were plugging up potential leaks. With a Synthetic blend, you probably don't have to worry too much about this. The % of synthetic in blends is very small. I personally would just stick with dino oil being they are better then ever now. If your not extending drains, I don't see the point.