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RED LINE Synthetic Manual Transmission 90 MT90 75W-90 GL4

RED LINE Synthetic Manual Transmission 90 MT90 75W-90 GL4


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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  • Description
  • Benefits
  • Specifications
  • Technical Info
  • Shipping Explained

RED LINE Synthetic Manual Transmission 90 MT90 75W-90 GL4

RED LINE MTL and MT-90 are designed to provide excellent protection and improved shiftability for manual transmissions and transaxles. MTL and MT-90 have cured the problem of hard shifting in numerous transmissions which have notoriously difficult shifting.

Popular in Nissan, Toyota and Mazda manual transmissions and transaxles as well as other selected applications, this is a 75W90 GL-4 Gear Oil that is slightly heavier than REDLINE MTL.
Provides excellent protection of gears and synchromisers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • Eliminates notchy shifting
  • Designed for manual transmissions and transaxles
  • Perfect synchronizer coefficient of friction
  • Enables high-speed downshifting
  • Excellent shifting even when cold
  • Eliminates gear whine and rattle at high temperatures
  • High-performance gear protection
  • Non-corrosive toward synchronizers
  • Satisfies manual transmissions and transaxles requiring motor oils, or GL-1, GL-3, or GL-4 gear oils


  • Specifications
    • API GL4

Technical Information:

Extensive technical data about Red Line MT-90 is available in the above PDF file.


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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We say...

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

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