Quicksilver 802844Q02 Premium Gear LubeMercury Marine gear lube outperforms automotive gear oil in marine applications because of its specialized additive package designed for marine gear cases. Continued use of this gear case lubricant will: Provide maximum protection against excessive wear - even in the presence of water; Prevent corrosion and pitting; Help extend gear life; Quicksilver Premium Gear Lube FAQsHow much gear lube does my engine need?It varies model to model, check out our Gear Lube Capacity Guide for more information and capacity charts!// Mercury Recommendations: Mercury Premium SAE 80W90 Gear Lube is recommended for lower units for outboards below 75 horsepower.; Mercury Premium SAE 80W90 Gear Lube should not be mixed with Mercury High-Performance SAE 90 Gear Lube.;