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RED LINE MT90 75W-90 GL4 Synthetic Manual Gear Oil

RED LINE MT90 75W-90 GL4 Synthetic Manual Gear Oil


RED LINE MT90 75w90 GL4 - 1 US Quart (0.946 litre)

1 US Quart (0.946 litre)


RED LINE MT90 75w90 GL4 - 1 US Gallon (3.78 litres)

1 US Gallon (3.78 litres)


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RED LINE MT90 75W-90 GL4 Synthetic Manual Gear Oil

RED LINE MT-90 is a synthetic manual transmission gear oil that provides outstanding protection for manual transmissions. Perfect for vehicles with notoriously difficult transmissions, such as certain Nissan, Toyota, and Mazda cars, RED LINE’s MT-90 gear oil solves the problem of hard gear shifting and allows for a smoother manual driving experience, even in cold conditions. This is the perfect 75W-90 gear oil for drivers seeking a solution to a difficult transmission that also protects and prolongs the lifespan of their gearbox synchronizers.

The formulation behind RED LINE MT-90 creates the perfect friction coefficient, with a balanced slipperiness that ensures smooth gear shifting. It’s suitable for brass synchronizers too, with none of the reactive sulphurs common in other gear oils that can cause corrosion. This is a high-performance gear protection option, perfect for drivers who don’t want to compromise on performance for gearbox health.


  • Provides the perfect friction coefficient for the smoothest gear shifting experience
  • Eliminates common hard shifting problems in manual transmissions
  • Performs excellently in all conditions, including extreme cold
  • Suitable for transmissions with brass synchronizers, with no corrosive sulphurs
  • Extends the life of gearbox synchronizers by reducing wear caused by friction
  • Increases gear shifting performance without compromising on protection


RED LINE MT-90 75W-90 GL4 meets the following specifications and approvals:

  • API GL-4

PDF Downloads:

Download the Technical PDFDownload the Safety PDF

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We say...

"MT90, what can we say? Probably the most popular synthetic 75w-90 for API GL4 applications."