High-Speed Engine Lubricants
YANMAR, KOSOKU series is designed for the highest performing range of high performance engines, providing the greatest level of cleanliness and protection which results in an extended life of your engine. It can help to lower your maintenance cost.
KOSOKU 25W40
YANMAR KOSOKU 25W40 is a synthetic blended oil can be used in any marine engine equipped with or without a catalytic converterOutperforms automotive oils in marine applications because of its specialized additive package designed for marine engines. Provides the best wear and corrosion protection when operating the engine at maximum output and high temperatures for extended periods of time. Maintain peak engine performance and reliability. Eliminate thermal breakdown under extreme RPM, temperatures and loads. Exceeds oil requirements and FC-W catalyst compatible qualifications for all marine engine manufacturers.
YANMAR KOSOKU 25W40 meets the requirements of Japan Engine Corporation, MAN ES, and WinGD.SAE Grade: 25W-40 SYNTHETIC TBN 40
KOSOKU 10W-40
YANMAR KOSOKU 10W-40 synthetic blended oil is recommended for use in all four stroke marine outboard, stern drive and inboard engines. SAE 10W40 weight oil, Meets or exceeds all marine engine manufacturer's warranty requirements and recommendations for use of an FC-W marine engine oil. It maintains its viscosity, protects against varnish buildup and sludge formation and exceeds the rust protection requirements for NMMA certification. YANMAR KOSOKU 30-12 meets the requirements of Japan Engine Corporation, MAN ES, and WinGD.
SAE Grade: 10W40 SYNTHETIC BLEND TBN 40
KOSOKU 5W40
YANMAR KOSOKU 5W40 is a monograde marine trunk piston engine oil for highly rated high speed diesel engines, adapted to high sulfur distillate fuels up to 0.5%S. Excellent detergent and dispersant capabilities guaranteeing engine cleanliness in all running conditions. Very good anti-corrosion and anti-oxidation capabilities providing engine durability. Excellent anti-wear and extreme pressure performances allowing use in reduction gears. YANMAR KOSOKU 5W40 meets the requirements of Japan Engine Corporation, MAN ES, and WinGD.
SAE Grade: 5W40 FULLY SYNTHETIC TBN 40
KOSOKU 40-20
YANMAR KOSOKU 40-20 is designed to meet the needs of a wide range of high-speed marine diesel engines operating under all conditions. It’s additive technology helps protect against corrosion and wear throughout the oil-drain interval, control piston deposits and maintain good standards of engine cleanliness. It can be used in many aspirated and turbo-charged engines to provide protection and longer engine life. YANMAR KOSOKU 40-20 meets the requirements of Japan Engine Corporation, MAN ES, and WinGD
SAE Grade: 40 TBN 20
PACKAGING
Packing Chart for High Speed Engine Lubricants
