PETRONAS Urania 1000 EHM 20W-50 is a premium CI-4 engine oil suitable for all types of heavy-duty diesel applications including modern, high-output, low emission engines fitted with emission control system using SCR and EGR technology. It is also suitable for new and old turbocharged and naturally aspirated diesel engines, both on-highway and off-highway applications. Recommended for High Mileage vehicles