Protect your outboard through long runs, rough water, and hard fishing days with Star Brite Super Premium Synthetic 10W40 4-Stroke Oil, a marine engine oil that helps bass, walleye, musky, salmon, tuna, and offshore anglers keep high-performance motors running clean and protected in saltwater and freshwater conditions. This 1 gallon formula targets 4-stroke outboard motors and also fits high-performance outboards, gasoline inboards, and stern drives that demand strong protection under high stress and RPMs. Shear-stable polymer additives and synthetic base stocks help maintain proper viscosity in extreme marine conditions, while the synthetic and organic blend supports quicker, more reliable starts in cold weather and harsh environments. Its advanced additive package fights sludge, varnish, piston deposits, and ring sticking, supports engine cleanliness, and adds rust and wear protection. It also meets or exceeds NMMA FC-W certification and surpasses API requirements for SJ, CF-4, and CH-4, giving boat owners a strong option for consistent engine performance and long-term durability. Shear-stable polymer additives and synthetic base stocks help protect engines under high stress and RPMs Synthetic and organic blend supports cold starts and maintains viscosity in harsh marine conditions Advanced additive package helps prevent sludge, varnish, piston deposits, and ring sticking Meets or exceeds NMMA FC-W certification and surpasses API SJ, CF-4, and CH-4 requirements 1 gallon Made in the USA
Price: $49.99 from FishUSA
| Merchant | Price | |
|---|---|---|
| FishUSA | $49.99 | Visit Store |
Keep your 2-stroke outboard running clean and strong with Star Brite Super Premium Synthetic TC-W3 2-Stroke Oil, a full-synthetic marine engine oil that helps anglers protect high-performance motors through long runs, repeated starts, and hard fishing...
Keep your 4-stroke outboard protected through long runs, cold starts, and hard fishing days with Star Brite Super Premium Synthetic 10W30 4-Stroke Oil, a marine engine oil that helps bass, walleye, salmon, musky, and saltwater anglers maintain strong...
Keep your trailer and marine hardware running smoothly with Star Brite Trailer Wheel Bearing Marine Grease, a marine-grade grease that helps anglers protect critical moving parts from water washout, rust, corrosion, and wear after repeated trips to the...