Originally Posted by redrocker55

I've done an oil analysis on each oil change and tested several oils. Go to the "bob is the oil guy" forum and you will see thousands of comments around oil analysis.

After testing oils from Castrol (dealership oil change and German Castrol), Amsoil and pennzoil ultra euro my personal analysis tells me the pennzoil performs the best. It's not easy to find. I get mine from amazon.