Starbrite ProStar 4 Stroke Outboard Engine Oil 10W30

Pro Star Super Premium Synthetic Blend 10W30 - 4 Stroke Oil from Starbrite is specifically designed for high performance 4 stroke outboards, gasolin inboards and stern drives. An ideal outboard engine oil for us in Honda, Mercury, Yamaha, Nissan, Johnson, Suzuki and Tohatsu outboards.

As one of the first 4 stroke oils to be officially certified under NMMA's new FC-W category, meets or exceeds all criteria for viscosity, filter plugging, foaming and aeration. Successfully passed NMMA's 100-hour general performance engine test.

• Surpasses API requirements for SJ, CF-4 and CH-4
• A premium, synthetic blend engine designed specifically for 4 stroke high-performance outboards, gasolin inboards and stern drives
• Prevents sludge build up and optimizes engines cleanliness
• Maintain proper viscosity under extremely harsh marine conditions due to shear-stable polymer additives and synthetic base stocks
• Excellent low-temperature quick start properties thanks to its synthetic/organic blend
• Excellent protection in severe high rpm applications