Quote:
Originally Posted by RallySnake
I am having much better performance with the Shell Rotella 10/40. It runs just as good and doesn't leak everywhere. The oil pressure is much better, too.
I believe that it continues to have zinc in it which helps with that camshaft wear issue.
RS |
Diesel oils are all CJ now. I havn't been able to find a CI
oil anywhere. The Cj oils have about 25% less
zinc in them, because newer diesel engines have a cat. So it doesn't have the
zinc a flat tappet cam really needs.
If you have flat tappets, you need to find something that has high zinc levels, like Brad Penn or RP XP. Or use a zinc additive.
My diesel engine has flat tappets, so it gets 2 bottles of Comp Cams break in additive with every 12 qt
oil change. The cobra uses standard Royal Purple, and gets one bottle for every 11 qt oil change.