Red Line Oil 50505 MT-85 75W85 GL-4 Synthetic Gear Oil - 1 Gallon

Red Line MT-85 75W85 GL-4 Synthetic Gear Oil is specifically formulated for manual transmissions and transaxles requiring a GL-4 rated lubricant. This 1-gallon jug contains premium polyol ester base stocks that deliver exceptional lubrication under extreme conditions of high-loading and high-temperatures.

Key Features:

• GL-4 rated for manual transmissions and transaxles
• 75W85 viscosity provides excellent protection across a wide temperature range
• Polyol ester base stocks offer superior natural lubricity to reduce friction and wear
• Natural multigrade properties ensure stable viscosity during extended use
• Reduces operating temperatures and friction in synchronized transmissions
• Excellent low-temperature flow for easier cold-weather shifting
• Formulated without friction modifiers for optimal synchronizer performance

MT-85 is engineered to provide faster synchronization and smoother shifting compared to conventional gear oils. The synthetic ester formulation reduces sliding friction while maintaining the precise friction characteristics required for manual transmission synchronizers. This results in quicker shifts, reduced shift effort, and improved transmission efficiency. The stable synthetic base stocks resist viscosity breakdown even under severe service conditions, providing long-lasting protection for transmission gears and synchronizers.

Ideal for high-performance street vehicles, racing applications, and any manual transmission where a 75W85 or 75W90 GL-4 lubricant is specified. Not recommended for hypoid differentials or limited-slip units that require GL-5 rated oils with friction modifiers.