United M2 Unique API SN/SM Synthetic Engine Oil is a premium fuel-efficient engine oil, specially designed for use in gasoline and diesel car engines, and in particular for Volkswagen TDI direct inject engine fitted with pump injector.United M2 Unique Fully Synthetic Engine Oil is ideal for modern high-output, low-emission, super or turbo-charged D OHC or GDI engines that are commonly found in the latest European and Japanese models.- A natural High Viscosity index and low volatility allow super fluidty over a wide range of temperatures and operating conditions- Better detergency, reduced wear, improves engine performance, yet energy conserving- Reduced friction particularly during cold starts and ensuring better lubrication of the engine components- Excellent anti-oxidation property protects against rust and corrosion. and extends drain interval