Golden Spectro 4 is formulated with complex synthetics high-density petroleum base stocks, special shear-stable polymers and the most advanced detergent-dispersant-anti-wear package available. Keeps motorcycle crankcases clean. Prolongs engine and transmission life. Provides smooth and quiet sniffing. Exceeds all manufacturers warranty requirements. Recommended for use in all modern four-stroke motorcycles. Meets API SF/SG quality requirements. Meets JASO MA requirements.