The world\'s leading tri-synthetic motor oil for modern cars especially those with high performance and turbo charged engines. Expertly improved with a unique combination of high performance fluids including the SuperSyn? anti-wear system, to deliver faster protection on start up for reduced engine wear and deposits, better fuel economy and excellent high and low temperature protection. Mobil 1 0W-40 is especially suitable for extreme conditions, where conventional oil often cannot perform. Mobil 1 is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.