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available in Lowell, MA
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Red Line MT-90 75W-90
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$23.10 USD
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Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant is engineered for high performance and long-term protection. With the ideal coefficient of friction, it enhances synchro life and eliminates notchy shifting—even in cold conditions. Designed for GL-1, GL-3, and GL-4 applications, MT-90 provides excellent gear protection and meets viscosity requirements for 75W, 80W, SAE 40, 10W40, and 15W40 motor oil.
Trusted since 1979, Red Line has built a reputation for uncompromising quality and innovation. MT-90 is safe for brass synchros, avoiding the reactive sulfurs in GL-5 oils that can cause damage. The result is smoother, quicker shifts, consistent reliability, and the confidence to push performance without sacrificing durability—whether on the street or track.
Applications
Pickup available at Select Speed Shop
Usually ready in 24 hours
Select Speed Shop
Automotive services and performance parts in Lowell, MA
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