...go to Joe Gibbs web site
they make some interesting points.
I have also called Shell Canada Tech. in Alberta and they stand by their latest Rotella Formulation and it's use for flat tappets at about 1200 ppm zinc

"there's a Dart with a 340 in it...they've got some muscle here tonight!"

Last edited by can.al; 05/20/10 08:22 PM.