75w90 Max Gear Oil 1 Qt.

The 75W90 Max Gear Oil 1 Qt. is a premium synthetic lubricant engineered for high-performance differential and manual transmission systems that demand superior protection under extreme load. This product is designed for mechanics, off-road enthusiasts, and fleet operators who rely on heavy-duty gear boxes in trucks, SUVs, and specialty vehicles. Whether you're navigating challenging terrain or maintaining heavy-duty equipment, this gear oil delivers the thermal stability and anti-wear properties needed for long component life and reliable operation.

Formulated with synthetic base stock and a limited-slip additive package, the 75W90 Max Gear Oil provides robust film strength across a wide temperature range, from cold starts to sustained high-heat operation. The 75W rating ensures smooth flow in cold conditions, while the 90 viscosity grade maintains adequate film thickness under peak load—critical for protecting gear teeth and bearing surfaces from scuffing and micro-welding. The integrated limited-slip additive enhances traction control by moderating differential spin during cornering, reducing tire wear and improving stability on slippery surfaces without damaging modern electronic traction systems.

This 1-quart bottle is ideal for top-offs, differential servicing, and maintenance routines on vehicles requiring 75W90 specification fluid. The convenient single-quart format fits standard engine compartments and tool kits, making it a practical choice for both professional shops and DIY technicians. Always consult your vehicle's owner manual to confirm viscosity grade and additive compatibility before use; while this synthetic formulation is suitable for most modern and classic manual and limited-slip differentials, some vehicles may require specific performance certifications or additives.