Shell Helix HX7 helps to keep engines clean and running efficiently by helping to prevent the formation of sludge and engine deposits. Shell Helix HX7 helps to prolong the engine life of modern vehicles in demanding daily traffic conditions by protecting against wear. Shell Helix HX7 can be used for petrol engines, diesel engines (without particulate filters) and gas engines, and it is also suitable for use with biodiesel and petrol/ethanol blends. It is also suitable for modern direct injection turbocharged petrol engines where it provides protection against damaging low-speed pre-ignition (LSPI).