In a blind perceptive survey, 90 percentage of the bikers agree that Shell advance makes their bikes run smoother. Provides optimized clutch control with JASO MA specification. In tough road trial of 11,000 KMs, pistons with Shell advance AX5 emerged cleaner than 3 other competitors. Provides 33 percentage cleaner pistons, ensuring the piston rings move more freely. Meets API SL performance specification.