SEAOIL DEOMAX 15W-40 API CI-4 / SL is a premium heavy-duty diesel engine oil (HDEO) formulated with advanced STP® additives to provide superior protection and performance for a wide variety of diesel engines. Specifically designed to meet the demanding requirements of modern diesel engines, including those equipped with Selective Catalytic Reduction (SCR) and Exhaust Gas Recirculation (EGR) emission control technologies, DEOMAX 15W-40 ensures long-lasting protection and efficiency even in the harshest operating conditions.

SEAOIL Diesel Engine Oil SAE 40 is a premium quality monograde heavy-duty diesel engine oil especially designed for engines requiring API CF performance lubricants. It is suitable for use with high sulfur fuels at appropriate oil drain intervals due to its level of alkaline reserve.

SEAOIL’s 100% fully synthetic motor oil. EXTREME MAKO is formulated with advanced additives and engineered to provide total engine protection and cleanliness under the most extreme conditions.