Sinclair 80W-90 Gear Oil is formulated specifically for multipurpose, extreme pressure applications, such as conventional differentials, gear boxes, limited slip rear axles, manual transmissions and hypoid gears. Formulated with only the highest quality lubricant oils and our most advanced additive systems that include anti-wear, anti-friction, and extreme pressure agents, along with corrosion and oxidation inhibitors.

Other benefits include:

• Excellent wear protection, especially under operating conditions of extreme pressure and high torque.
• High thermal breakdown resistance.
• Prevention of, rust, foaming, and corrosion.
• Smoother and quieter operation.

Robust Anti-Friction, Anti-Wear Chemistry

Sinclair friction and wear control is unsurpassed, with advanced molecules that bond to form a barrier-building shield that reduces friction and wear.

Stands Up to Even the Most Extreme Conditions

Get outstanding protection even in the most severe hot and cold climates, pressure, micro pitting, or oxidation.

Performance You'll Notice

OEMs are continuing to change driveline designs, and conditions of operations are growing more severe. So you need gear lubricants with outstanding load-carrying capability wherever extreme pressures and shock loading might occur. The technologically advanced driveline gear oils from Sinclair are formulated to meet the challenge of balancing protection, toughness and endurance.