words of wisdom well said.................back in the 92 i helped out a friend who had a shop ..he was a trained race engine mechanic..who was getting into daily driver repair....back then what i understood was...never use q state or penz..............to much paraffin......these oils loved to burn on top....after giving mr parr a hand for a wk to get caught up on his cust work load.........he schooled me on engineering/chemistry facts that the nascar/nhra teams/owners all knew.........there was only 1 oil co spending millions on getting it right.......valvoline.......and how many million dollar race co use valvoline ..mr parr said all of them....even those who had paid endorsements of other oil co.......of course everyone has there opinion....when the pro lube gas bag said.........oh you dont need zink addative in any oil................hummm.....passs.........
