MT-LV GL-4 Gear Oil Case 12 x 1 Quart

The MT-LV GL-4 Gear Oil Case by REDLINE OIL delivers synthetic manual transmission protection in a bulk 12-quart package designed for serious enthusiasts, fleet operators, and service professionals. Manual transmissions demand precise lubrication chemistry to handle synchronizer wear, gear tooth scoring, and synchronizer brass protection—especially under high-performance driving, towing, or spirited downshift sequences. This case format makes it the economical choice for shops managing multiple vehicles or owners maintaining their own transmissions across season changes and rebuild cycles.

Formulated as a 70W/75W synthetic gear oil, MT-LV uses advanced friction modifiers and anti-wear additives to reduce gear whine, extend synchronizer life, and maintain film strength across ambient temperature swings—critical when manual boxes transition from winter cold-starts to summer heat soak under load. The synthetic base resists viscosity breakdown and oxidation far longer than mineral counterparts, translating to extended drain intervals and stable shift quality even after thousands of aggressive miles. GL-4 classification ensures compatibility with brass synchronizer rings and other soft metals found in manual transmission assemblies, preventing corrosion and deposit buildup inside the case.

Manual transmission owners running performance builds, off-road vehicles, or vintage sports cars benefit most from REDLINE's thermal stability and anti-shudder properties. The 12 x 1-quart bottle configuration suits both single-fill applications and multi-vehicle workshops without excess inventory waste. Verify your transmission's original fill capacity and specification before purchasing; most modern manual boxes call for 1.5 to 2.5 quarts per drain, making this case sufficient for 4–8 complete services depending on gearbox design and depth of the sump.