Zinc Additive

Higher levels of zinc and phosphorous adds greater protection then regular oil especially with solid lifter/roller cams with stiff springs or initial first run breakin of new engines, just keeps things from "grinding" together. the VR1 has about 1450 ppm of the additives and will work good for you as the post above recommended. If you need more info on this oil just simply google search for oils with higher levels of both zinc and phosphorous and read some articles. Hope that helps