When it comes to Yamaha, it's all about the engine. And when it comes to the engine, it's all about performance. So whether you prefer the track, trail, highway, water or snow, choose oil and care products specifically formulated to enhance the performance of your Yamaha engine - Yamalube. Performance-blended mineral oil for use in motorcycles, ATVs, side-by-side vehicles, and scooters. Provides stable clutch performance, strength to protect the engine from wear and tear of daily use. A precise blend of top quality mineral base oil and ultra-clean additives provide superior anti-frictional properties. Meets or exceeds the requirements of JASO MA - the highest certified rating of motorcycle engine oil that ensures proper wet clutch performance. Yamalube P/N: LUB-20W50-AP-04.