? Guinness for oil and gas imports depth hydrogenation refined base oils and additives, refined by advanced technology and carefully modulated, and specifically for compressed natural gas (CNG) cars and design. Usage: apply to compressed natural gas (CNG) ?, liquefied natural gas (LNG) as fuel for buses, taxis, buses and the like. Features: ● Excellent high temperature clean dispersion, can effectively control the generation of sediment; ● low ash content, avoid hard deposits formed on the surface of engine components and spark plugs clogged, prolong engine life; ● reduce exhaust excess pollution emissions of nitrogen oxides and other harmful substances; ● has excellent corrosion resistance in acidic substance at any time and gaseous fuel produced in the combustion process, the effective protection of the engine; ● natural gas in gaseous state into the cylinder, do not have the liquid lubricating function, this doubling lubrication performance products to prevent valve seat wear. ● comply SAE15W-40 or SAE20W-50 viscosity grade. ? Typical data: