Castrol POWER1 Racing 4T is born from the historical Castrol experience into the racing world. Features : The new Castrol POWER1 Racing 4T with Race Derived Technology is proven to stay strong and deliver acceleration in race track conditions. It resists thickening at high temperatures, maintaining oil viscosity allowing to ensure maximum engines performance. It has been tested under harsh racing conditions for over 40,000 km it maintained 94% of the start of test maximum power produced by the engine, delivering racing performance without sacrificing engine protection.