PETRONAS Urania Supremo CI-4 is an advanced ultimate-performance multigrade diesel engine oil for used in the most severe on-highway and off-highway applications.

It is specially engineered for modern, high-output, low-emission engines including those fitted with Exhaust Gas Recirculation (EGR) as well as older high speed turbocharged engines running on low sulphur diesel or conventional high sulphur diesel fuel.

Its advanced additive system ensure excellent control over soot induced wear, high temperature piston deposits, corrosion, foaming and oxidation stability. It also provide excellent resistance to bore polishing, a high level of wear protection and ensure superior engine cleanliness at extended drain intervals.