Anyone know what is in this stuff? Before I knew better, I used a steady diet of Quaker State 10W-40 and 1/2 bottle of GM EOS at every 3k mile oil change in my Chevy SB V8 engines. Supposedly, the EOS had high levels of zinc and/or moly, and I reasoned it would provide some extra protection.
Obviously this stuff did not do much harm, as the engines held up well, and always looked good inside.
So just what, exactly, was I adding to my oil??
Obviously this stuff did not do much harm, as the engines held up well, and always looked good inside.
So just what, exactly, was I adding to my oil??
