Pro Honda GN4 motorcycle oil is a unique blend of costly shear-stable polymer additives with top quality base stocks, engineered by Honda R&D to resist viscosity and thermal breakdown in motorcycle applications. Exceeds all requirements for API service classifications SJ, all new Honda motorcycles, ATV, and scooter warranty standards, and all Owner's Manual recommendations. Approved for use as engine oil in all Honda 4-stroke motorcycles, ATVs, scooters, watercraft and MUVs and as gearbox/transmission lubricant for all Honda 2-stroke motorcycles, ATVs, and scooters.