The initial start-up of a new engine is critical to its performance and life expectancy. How well and how fast the rings will seal could make the difference between winning and losing. Compatible with Ethanol, Methanol and high octane race gas. Recommend use on initial break-in of both flat tappet and roller camshaft applications for maximum protection and performance. Excellent on-track performance prior to switching engine over to the racing only line, conventional or synthetic.