Helps to protect the engine against fiction and heat when operating under stress, such as towing, carrying heavy loads or in heavy traffic. Contains proprietary friction modifier- creates an enhanced layer of lubrication, minimizing friction produced heat, for a smoother operation. Anti-wear agent forms a self-regenerating protective surface between metal parts to prevent these grating together. A dispersant helps to keep the engine clean by preventing the build-up of sludge and deposits on engine parts. Compatible with all major types of mineral and semi-synthetic motor oils, suitable for use in both Petrol and Diesel engines.