TarMarine 400 Series are SAE 40 trunk piston engine oils developed for medium-speed diesel engines operating on residual fuels. With refined base oils and advanced additives, they deliver excellent detergency, oxidation stability, and wear protection. Strong resistance to deposits, water contamination, and fuel impurities ensures cleaner engines, reduced maintenance, and reliable performance in both marine and stationary power generation applications.

Please check your owner’s manual for the manufacturer’s recommended oil viscosity grade and API classification and approvals.