Sunlube 4T 15W-40 is a premium synthetic-blend, shear-stable, multigrade, multifunctional lubricant designed specifically for four-stroke gasoline motorcycle engines, clutches, and gearboxes operating under severe conditions. Its optimized frictional characteristics ensure smooth clutch engagement and enhanced acceleration. The synthetic-blend formulation combined with carefully selected additives provides superior protection against wear, deposit formation, and thermal degradation — maintaining consistent performance throughout the oil’s service life. Recommended for use in four-stroke gasoline motorcycle Engine, Clutch, and Gear (ECG) applications such as Honda, Suzuki, Kawasaki, Yamaha, Bajaj, and other motorcycles requiring the specifications below.