Red Line MT-90 is a premium synthetic GL-4 gear oil engineered specifically for manual transmissions and transaxles. Designed to resolve hard shifting issues, MT-90 provides excellent protection, perfect synchronizer compatibility, and smoother gear engagement—even in cold weather. Trusted by thousands of drivers and professional tuners alike, it delivers long-lasting performance and reliability.
Key Benefits:
Premium GL-4 Rated – Ideal for manual transmissions requiring 75W90
Improved Shift Quality – Reduces notchy or stiff gear changes
Excellent Cold Weather Performance – Maintains smooth shifts at low temperatures
Perfect Friction Coefficient – Formulated to match synchronizer requirements
Thermal & Shear Stability – Consistent performance across a wide temperature range
Oxidation Resistant – Longer oil life, protects against gear wear and sludge build-up
Trusted Worldwide – Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Toyota, Lotus Elise/Exige, and more
Specifications:
Viscosity: 75W90 (similar to SAE 5W40/10W40 engine oil viscosity)
API Rating: GL-4
Volume: 1 Quart (0.946 Litres)
Type: Full Synthetic Manual Transmission Fluid (MTF)
Made in USA
Applications:
Suitable for manual transmissions and transaxles requiring GL-4 gear oil
Ideal for sports cars, performance sedans, and daily drivers needing smooth gear shifts
Packing Info:
1 Bottle = 1 Quart = 0.946L
Price Quoted Per Bottle