80w90 Gear Oil 1 Gal

Lucas Oil 80W90 Gear Oil is a heavy-duty conventional gear lubricant formulated for high-pressure differentials and manual transmissions in trucks, off-road vehicles, and motorsports applications. The 1-gallon jug delivers a ready-to-use supply of synthetic-blend protection with Lucas Oil's proven limited-slip additive package, engineered to reduce gear noise, extend component life, and maintain film strength under severe towing and high-torque conditions.

The 80W90 viscosity rating meets industry standards for most light-duty to medium-duty differentials and manual gearboxes. This weight provides excellent cold-flow characteristics for winter operation while maintaining stable film thickness during highway and off-road driving. The integrated limited-slip additive eliminates the need for separate friction modifier additives, simplifying maintenance and reducing the risk of incompatible product mixing. Conventional formulation ensures compatibility with both modern and vintage drivetrain components, making this gear oil suitable for a broad range of vehicle platforms.

This product is essential for owners of full-size trucks, SUVs, and work vehicles that regularly tow trailers, carry heavy loads, or navigate rough terrain where driveline stress is elevated. Off-road enthusiasts and fleet operators rely on 80W90 gear oil to protect differentials against metal-to-metal contact, gear scuffing, and thermal breakdown during sustained power delivery. The 1-gallon container provides a convenient fill or top-up volume for single-differential service or smaller fleet applications.

Lucas Oil is recognized for its aftermarket lubricant additives and blended oils that address specific drivetrain challenges. This 80W90 formulation complements OEM specifications while delivering the brand's reputation for thermal stability and anti-wear protection. Always verify your vehicle manufacturer's recommended viscosity and performance level before use.