... beautiful packing; 4.Short delivery time. A:Arkane Engine oil Additive:1.contains PTFE (dupont carbon oxygen compound),which can form ... on the surface.2.Reduce mechanism friction, wear, engine noise, fuel consumption,emissions pollution and improve output efficiency,3.Significantly extend ... corroding, jam oil way.7.Harmless to catalytic converter sensors FUEL SAVER (Fuel System Additive)