VP GL-5 75w140 Gear Oil Full-Syn 1 Qt

The VP GL-5 75w140 Gear Oil Full-Syn 1 Qt is a premium synthetic lubricant engineered for high-performance differentials, transfer cases, and manual transmissions that demand robust protection under extreme stress. Built for serious enthusiasts and mechanics who refuse to compromise on drivetrain reliability, this full synthetic formulation delivers superior film strength and thermal stability where conventional mineral oils fall short. Whether you're running a heavily modified truck, a track-focused sports car, or any vehicle with performance gearing, this synthetic gear oil provides the cushion your differential needs during aggressive acceleration, cornering, and load transfers.

VP Racing's GL-5 formulation utilizes advanced base stock chemistry to maintain viscosity and shear stability across wide temperature ranges—critical when differential temps climb during sustained spirited driving. The 75W140 viscosity grade delivers cold-start pumpability in winter conditions while sustaining a robust film at operating temperature, protecting gear teeth from micro-welding and spalling. The integrated limited-slip additive (LS) provides smooth, predictable clutch pack engagement without chatter, making this oil ideal for vehicles equipped with aggressive diff lockers or performance limited-slip units. Full synthetic construction resists oxidation and extends drain intervals compared to traditional petroleum-based alternatives, reducing maintenance downtime.

This 1-quart bottle is perfect for topping off or partial system fills during regular maintenance or after a differential service on most light-duty trucks, SUVs, and performance cars. Before filling, verify your vehicle's gear oil specification in the factory service manual or consult your mechanic—not all differentials tolerate the same viscosity or additive package. The limited-slip additive makes this formulation particularly well-suited for factory or aftermarket lockers where smooth power delivery and reduced tire scrubbing are priorities. Keep a spare quart on hand for emergencies or track days when thermal cycling demands peak protection.