Mineral oil. Multigrade lubricant for 4-stroke engines and particularly suitable for cars and light commercial vehicles. PROCESS GS is characterised by good anti-oxidant, anti-rust and anti-wear properties and thus contributes to an effective protection of your engine. Suitable for all types of petrol and diesel engines with or without turbo, using all types of leaded or unleaded fuels, diesel and LPG, with or without catalytic converter.