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RED LINE Synthetic Manual Transmission Lubricant MTL 75W-80 GL4

RED LINE Synthetic Manual Transmission Lubricant MTL 75W-80 GL4

RED LINE MTL 75w80 GL4 - 1 US Quart (0.946 litre)

1 US Quart (0.946 litre)


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

RED LINE Synthetic Manual Transmission Lubricant MTL 75W-80 GL4

This product has recently changed viscosity grade from 70w-80 to 75w-80.

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.

The secret to their success is two-fold. First, they have the appropriate coefficient of friction for most manual transmission synchronizers. Many gear oils, engine oils, and ATFs are too slippery for proper synchro engagement. Secondly, the viscosity characteristics of MTL and MT-90 allow proper shifting over the entire temperature range which the transmission will experience. The synthetic base oils used have a very high viscosity index which provides relatively constant viscosity as temperature changes. MTL is a low 75W, almost a 70W, at very low temperatures and a high 80W, nearly an 85W, at elevated temperatures, providing adequate viscosity to prevent wear and deaden gear noise. 

Popular for BMW, Honda and Acura, Ford Focus, late-model Mini Cooper, Land Rover/Range Rover LT77S, Dodge & Jeep NV1500, NV3500 , NV3550 and NV5600 truck transmissions

Popular replacement for and improvement over GM Synchromesh® (#12345349), Auto-Trak II® (#12378508) and Chrysler spec MS-9224

PDF Downloads:

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• Eliminates notchy shifting
• Designed for manual transmissions and transaxles
• Perfect synchroniser 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 synchronisers
• Satisfies manual transmissions and transaxles requiring motor oils, or GL-1, GL-3, or GL-4 gear oils
• Compatible with petroleums and other synthetics
• Excellent for high- and low-mile transmissions


  • Satisfies the gear oil viscosity requirements of 75W, 80W, and motor oil viscosities of SAE 30, 10W30 and 5W30
  • Recommended for GL-1, GL-3 and GL-4 applications as well as where most special synchromesh fluids are specified
Recommended For:
  • API GL-4 / GL-3 / GL-1
  • SAE 80 / 80W / 75W80
  • SAE 30 / 5W30 / 10W30
  • MINI / BMW 83 22 0 403 247 / 83 22 0 140 516
  • MINI MTF 94
  • MB 235.10
  • SAAB MTF 0063
  • OPEL / VAUXHALL #09 120 541
  • PEUGEOT / CITROEN PSA B71 2330 75W80
  • RENAULT CLIO PT# 77 11
  • VOLVO MTF 97309-101161745 / M2C 200-C3
  • VW / AUDI G 052 532 - G 055 532
  • FIAT
  • SAAB
  • TATA
  • FORD


SHIPPING IS FREE* for orders of £60 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 £4.99 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...

"Another good offering from the USA. If you have a Honda this could be the manual gear oil for you!"

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Rated Excellent