CH-4 / SL 15W-40 is designed for compatibility in BS III, IV and VI design diesel engines. It is loaded with high detergent additives to keep liners and rings clean enhancing their life. Supporting high detergency are latest dispersant additives ensuring long drain life, base oils used ensure very low volatility even at high temperature. CH-4 / SL 15W-40 is backward compatible to older engines also