Originally Posted by braverichard

Aklim I completely agree with you on the other reasons for using synthetic oil other than the claimed increase in engine lubrication, protection and efficiency. I won't see myself crawling under any car during this cold season because I have long drain interval synthetic oils in all my cars. To me, that alone is worth the extra cost. In fact, I have Amsoil in all my cars bumper to bumper -- transmission fluid, engine oil, and differential fluid. The extended drain intervals are very much worth it. Plus, if you're of the environmentally correct kind, you can also take comfort in adding less fluids that need disposal to the environment.