20w-50 AKINAWA TURBO DIESEL CI-4 20W-50 is high viscosity index oil designed for diesel engines and formulated with hydrocracked base stocks. It is intensified with a group of high technological detergents and dispersant additives. This product has sufficient alkalinity to alleviate the negative effects of diesel fuel containing high levels of sulfur and polycyclic hydrocarbons. API CI-4/CH-4/SL ACEA E7 CAT ECF-1a Global DHD-1 MAN M3275 MB-Approval 228.3