petronas-uraniaPETRONAS URANIA is a range of diesel engine oils for commercial vehicles such as truck tractors, trucks, buses and other heavy equipment that works in difficult operating conditions. PETRONAS Urania Premium oils are environmentally friendly, low ash content (Low-Ash technology) and are compatible with vehicle emission control devices like EGR (exhaust gas recirculation) and/or DPF (diesel particulate filter) system.