Specially formulated and premium blended for Honda Marine Outboard Motor lower unit gear cases Improves the life expectancy of gear cases Exceeds API service classifications GL-4 and GL-5 High shear strength resists viscosity breakdown Semi-synthetic formulation adheres to gear and bearing surfaces and maintains protective qualities throughout the widest range of operating temperatures and loads Special additives protect against wear, scuffing and corrosion Tested and approved by Honda R&D, this oil is in full compliance with Honda's warranty requirements Please refer to your Owner's Manual for oil recommendations Honda Marine recommends the lower unit gear case oil be changed every 6 months or 100 hours of engine use, whichever comes first Genuine Honda part Honda part number: 08739-90W