ASUKI® DOWNFORCE ダウンフォース 10W30 is an all-weather, all-purpose engine oil for passenger cars and commercial vehicles, operating with extended service intervals in various climate conditions. ASUKI® DOWNFORCE ダウンフォース 5W40 is fortified with ASUKI®’s signature NANO Technology and resulting in high viscosity index and excellent antioxidative stability. ASUKI® DOWNFORCE ダウンフォース 5W40 ensures high strength of oil film at high-speed shear and reliably protects critical parts at high operating temperatures. Due to the highly effective additives package the product maintains engine cleanliness, minimizes formation of varnish, deposits and sludge, thus contributing to maximum durability of hi-tech engines.