Lubricant Oil SW40 is an automotive engine protection viscous formulation that acts as a protective barrier to prevent damages to the component parts from excess wearing and extreme temperatures. It is in high demand as it maintains its viscosity at higher temperatures and shows good performance in all weather conditions. Lubricant Oil SW40 also acts as rust protection that leads to longer engine life. This viscous formula greatly reduces the overheating that helps in prevention of damages to the valves and spark plugs.