Star Brite 029100N SAE 25W-50 Synthetic Blend 4-Stroke Marine Engine Oil 1 Gallon

The Star Brite 029100N is a SAE 25W-50 Synthetic Blend 4-Stroke Marine Engine Oil formulated specifically for high-performance and high-output marine engines. Packaged in a convenient 1-gallon (128 oz / 3.78 L) container, this premium oil delivers outstanding protection in the demanding conditions unique to the marine environment.

This FC-W® certified formula combines synthetic and mineral base stocks with a marine-grade additive package engineered to resist thermal breakdown, combat corrosion, and maintain viscosity stability across a wide range of operating temperatures and RPM levels. The 25W-50 viscosity grade is ideal for high-performance 4-stroke outboard, sterndrive, and inboard engines that operate under heavy loads and elevated temperatures.

Key Features:

• SAE 25W-50 viscosity — designed for high-performance, high-output 4-stroke marine engines
• Synthetic blend formulation — superior protection compared to conventional marine oils
• FC-W® certified — meets NMMA (National Marine Manufacturers Association) standards for 4-stroke marine engine lubrication
• Rust and corrosion protection — guards internal engine components against moisture and saltwater exposure
• Thermal stability — resists viscosity breakdown at high RPM and elevated temperatures
• Reduced wear — advanced additive package minimizes scuffing and scoring of engine internals
• 1-gallon (128 oz) size — provides ample oil for multiple oil changes or top-offs

Star Brite 25W-50 Synthetic Blend 4-Stroke Marine Oil is an excellent choice for boaters who demand premium lubrication for their high-performance marine engines. Its marine-specific formula ensures reliable protection in environments where standard automotive oils fall short.