GT 10W-40 is a low-friction engine oil whose base is modern refining technology combined with high-quality lubricant components and shear-stable enhancers, ensuring the specified viscosity class is maintained throughout the entire oil life. Reliable cold starts even at low temperatures and high-temperature resistance under heavy load are guaranteed. Cleaning additives prevent deposits, keeping pistons and valves clean and ensuring the maximum permissible oil service life. GT 10W-40 is recommended for gasoline and diesel engines in passenger cars, including turbo-diesel and catalytic converter versions (excluding PD, WIV, DPF).