Zinc

Just a quick FYI to all those reading the thread in the OP...540RAT was tossed from speedtalk for posting crap results. His testing procedure was proven false and that he wasn't even using the correct procedure to test engine oils.

If you want to learn about engine oils call Torco Racing oils or Joe Gibbs. Be very careful waht you read online. Verify EVERYTHING (especially if it comes from me).