Star Brite 028255 Super Premium Synthetic Blend 4-Stroke Outboard Oil 10W-40 55-Gallon Drum

Star Brite Super Premium Synthetic Blend 4-Stroke Outboard Oil SAE 10W-40 is a professional-grade marine engine lubricant engineered for high-performance 4-stroke outboard motors, gasoline inboards, and stern drives. Available in a convenient 55-gallon drum, this formulation is ideal for marinas, dealerships, and high-volume marine service operations.

Key Features:

• NMMA FC-W Certified – One of the first 4-stroke marine oils to achieve NMMA FC-W certification, meeting or exceeding all requirements for viscosity, filter plugging, foaming, and aeration control
• Synthetic Blend Formula – Premium synthetic base stocks combined with shear-stable polymer additives maintain proper viscosity under extreme marine conditions and high RPM operation
• Superior Cold-Weather Performance – Synthetic/organic blend provides exceptional low-temperature properties for quicker, more reliable engine starts in harsh environments
• Advanced Engine Cleanliness – Proprietary additive package prevents sludge, varnish, and deposit buildup, keeping engines running cleaner and more efficiently
• Exceeds API Requirements – Surpasses API SJ, CF-4, and CH-4 specifications, meeting the most demanding OEM requirements
• Proven Performance – Successfully passed NMMA's rigorous 100-hour general performance engine test
• 55-Gallon Drum – Bulk packaging designed for commercial marine operations, service centers, and fleet maintenance

Star Brite 10W-40 4-stroke marine oil delivers the protection that saltwater and high-stress marine environments demand, making it a trusted choice for outboard motors, inboard engines, and stern drives where conventional automotive oils fall short.