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Red Line 50304 MT-90 75 W-90 GL-4 Manual Transmission Lubricant

A premium lubricant ensuring smooth, reliable shifting in all conditions.

Frowse Rating9.9/10

Available in a range of sizes.

This Red Line MT-90 manual transmission lubricant provides high-performance gear protection and enhances synchro life. It is suitable for GL-1, GL-3, and GL-4 applications and promotes quicker shifts, even in cold conditions. Recommended for various gear oil viscosities, this oil is also safe for brass synchros due to its non-reactive formula.

  • High Performance: Protects gears and extends synchro life.
  • Quicker Shifts: Optimised for smooth shifting, reducing notchy feel.
  • Versatile Use: Compatible with GL-1, GL-3, GL-4 applications.

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Frowse Rating 9.9/10

Best for: Performance vehicles and everyday drivers

Our Review

The Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant stands out as a top-tier choice for those seeking high performance in their vehicles. Its composition allows for exceptional gear protection and promotes longer synchro life, making it particularly beneficial for applications adhering to GL-1, GL-3, and GL-4 standards. The lubricant's efficiency in facilitating quicker shifts, even in colder conditions, enhances the overall driving experience significantly.

This product suits both performance enthusiasts and everyday drivers who want reliable transmission performance. The quick synchronizer coefficient of friction it offers ensures smoother shifting without the common hassle of notchy transitions, capturing the attention of those prioritising seamless operation during gear changes. Its compatibility with brass synchros adds an extra layer of value, as it avoids the reactive sulfurs present in many other oils that can cause harm.

Overall, Red Line has built a reputation since 1979, and their MT-90 lubricant certainly lives up to this legacy. It is a commendable option for anyone needing a dependable transmission fluid that outperforms its competitors, ensuring satisfaction with every use.

What we like

  • High performance with exceptional gear protection
  • Promotes longer synchro life
  • Facilitates quicker shifts even in cold conditions
  • Safe for brass synchros, avoiding harmful sulfurs
  • Widely popular for GL-1, GL-3, and GL-4 applications

Our verdict

A premium lubricant ensuring smooth, reliable shifting in all conditions.

Product Details

Product Details

The Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission Lubricant is formulated to provide high-performance gear protection and longer synchro life. It is recommended for use in GL-1, GL-3, and GL-4 applications, ensuring compatibility with a range of manual transmissions.

Performance Features

  • High Performance: This lubricant provides superior gear protection and extends the life of synchronisers.
  • Quicker Shifts: It has a well-defined synchronizer coefficient of friction, which helps to eliminate notchy shifting even when cold.
  • Application Requirements: Suitable for gear oil viscosities of 75W, 80W, SAE 40, 10W40, and 15W40 motor oil.

This lubricant is also popular for applications where most special synchromesh fluids are specified. Importantly, it is safe for brass synchronisers as it does not contain the reactive sulfurs found in many GL-5 oils, which can cause damage.

Brand Information

Established in 1979, Red Line Products are known for their high performance and protective qualities, noted for outperforming competitors in the market.

ASIN:
B000CPCBEQ
Brand:
Yukon Gear & Axle

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