We have used about every
oil possible. We will only warranty our engines if Joe Gibbs is used. If you look at the facts it has more ppm
zinc and less ppm detergent than most any other
oil. Try to stay away from most all
oil that you can buy through a regular parts store. Those oils have to meet the lasted epa standards which have taken most all
zinc out and added lots of detergents. As you well know
zinc is what bonds the oil to the metal and the high ppm detergents wash the zinc away. This works great for late model stock engines with overhead cams and low spring pressure. Bottom line, make sure there is plenty zinc in the oil to save problems in the future.