Give your new engine the best possible start. BluePrint Engines SAE 30 Break-In Oil is engineered to protect high-performance crate engines during their critical first 500 miles. This premium mineral oil is loaded with 2,700 ppm of zinc and 2,400 ppm of phosphorus to reduce wear, improve compression, and extend oil film strength under extreme conditions. Designed for all engine types, flat-tappet or roller, this formula provides unmatched startup protection and eliminates the need for additional additives.