Shell Rimula T2 engine oils specially designed for TATA vehicles, use proven(or TATA approved combination of) combinations of additives that react to the the varying needs of your engine. They include active dispersants to carry away dirt, keeping the engine clean. Each dedicated additive releases its protective energy when needed to ensure: 1. Reliable and consistent protection against deposits and wear 2. Resist thickening by heat. Approved by TATA MOTORS for service fill in virtually all heavy duty applications including turbo charged engines, requiring API CF4 specification.