PETRONAS Disrol 400 Series are high performance trunk piston oils specially developed for highly rated medium-speed diesel engines burning up to 3.5% sulfur fuels. Formulated with high quality selected base oils enhanced with anti-wear, detergent/dispersant, anti-oxidant, anti-rust and anti-foam additives, PETRONAS Disrol 400 oils provide excellent engine cleanliness, especially in crankcase, camshaft and valve train areas, also provides excellent thermal and oxidation stability with very good corrosion protection. PETRONAS Disrol 400 Series meet or exceed key OEM requirements.