Indilube ultima gold turbo synth 15w, 40 api ci, 4, Diesel engine oil for commercial and built for rigorous use vehicles . Indilube ultima range is high performance diesel engine oil designed in order in order to meet the most severe performance specifications of the latest high output, Low emission engines powered by including those, Diesel fuel equipped with exhaust gas recirculation egr system, Formulated with paraffinic base oil gr ii and gr iii and superior additive technology crafted to provide the highest diesel engine performance levels. Technology advantage avoids filter plugging, Oil thickening and abrasive polishing wear exceptional oxidation stability at high temperature and soot control minimizes degradation sludge formation and oil thickening longer drain intervals special low synthetic fluids reduce oil evaporation shear stable viscosity index improver prevents oil flow through the piston rings by maintaining oil viscosity At elevated temperatures