A modern, fully synthetic, fuel-saving, low friction multigrade engine oil formulated using the latest tungsten additives together with USVO technology base oils, especially developed for motorsport applications. It has full OEM approval from Mercedes-Benz, Volkswagen, Renault, BMW, GM and Porsche. This oil is not only impressive as a result of its low sulphate ash content but also offers reduced HTHS viscosity for measurable fuel savings, even when driven hard. It therefore not only reduces the amount of fuel carried (and therefore weight) but also contributes to reducing emissions and protecting the environment. The incredibly low shear rate of RAVENOL USVO Racing Engine Oils is a major factor in dramatically reducing fuel dilution when running at full throttle. As a result of the use of special tungsten based additives, RAVENOL RUP 5W-40 Racing Engine Oil provides the ultimate protection when driving on the limit. It utilizes the positive properties of tungsten to smooth the surface structure of the motor, reducing friction and wear, and significantly improving mechanical efficiency and provides a safe layer of lubrication, even at very high operating temperatures. Extensive protection against corrosion (oxidation) and foaming. Recommended for modern engines used in circuit racing.