Has the viscosity of a typical of 15W-50, Oil is sold as box of (12), 1-qt. bottles, This petroleum oil provides the highest levels of zinc and phosphorus for flat-tappet engines, It is good for full power pulls on the dyno, one night of racing or up to 400 miles on the street, A special additive package promotes ring seal and provides maximum protection available for cams and lifters during initial break-in.