SKU: PRB8398
MPN: 530 8398
The Pro-Tuff Gear Lube-16 OZ is a premium gear oil additive formulated for serious automotive enthusiasts and mechanics who demand superior transmission and differential protection. Whether you're running stock gearing, upgrading to deeper ratios for towing, or modifying your drivetrain for performance, this 16-ounce bottle delivers the anti-wear and extreme-pressure additives your gears need to handle sustained stress. Gear oil without proper additives breaks down under the intense pressure and shearing forces found in differentials and manual transmissions—especially when you're pushing power through modified engines or aggressive driving conditions.
Pro Blend's formulation includes advanced anti-wear (AW) chemistry and extreme-pressure (EP) film strength designed to protect gear teeth and bearing surfaces under shock loads and sustained high torque. The additive package prevents oxidation and sludge formation, critical when gear oil sees elevated temperatures in performance applications or heavy-duty service. The 16-ounce size (1.06 lbs) makes it ideal as a top-up or partial drain additive, allowing you to boost protection in existing gear oil without a complete fluid change, or to fortify fresh oil during a planned maintenance interval. This concentrated formulation works in both hypoid and non-hypoid gear sets, making it versatile across differentials, transmissions, and transfer cases.
Mechanics and DIY builders rely on Pro-Tuff Gear Lube when they've modified final drive ratios, upgraded to limited-slip or locking differentials, or tuned engines for higher output torque delivery. It's particularly valuable after transmission swaps, differential rebuilds, or when converting to synthetic gear oil—situations where additive depletion or friction coefficient changes demand a quality additive boost. Always verify compatibility with your gear oil's base stock and existing additives before mixing, and follow your vehicle manufacturer's fill volume and viscosity recommendations for optimal results.
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