oil and filter

thats really good info ,yes it is a blue bottle that looks almost like a stp bottle. the stuff i use is called pro shop oil treatment and on the back it says it contains
zinc Diakyl-Dithiophosphate and Olefin Copolymer. i agree with not using additives unless u cant avoid it but me and dad dont have anything worth buying the racing oils for well until i get my motor built then ill probably run VR1 or something to that affect.