zinc schmink

jesel probably cut some kind of marketing deal with joe gibbs or something

build it right everything checked dont just slap stuff together they are fine on most any oil that is changed regularly

you could run 1000000000 ppm zddp but if you build the engine without attention to detail it's not gonna last


here is a good read on oils this guy actually is an engineer that has TESTED and documented over 100 different motor oils how they compare for overall wear protection. the rankings start about 1/2 down the page

http://540ratblog.wordpress.com/2013/06/20/motor-oil-wear-test-ranking/