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Red Line MT-90 Synchromesh 75W90 GL-4 Manual Transmission & Transaxle Gear Oil

Red Line MT-90 Gear Oil is the most popular for Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota.
Variant Title Product Code
Red Line MT-90 Synchromesh 75W90 GL-4 Manual Transmission & Transaxle Gear Oil U.S. GALLON - 3785 Litres Red 50305

Availability: In Stock

RRP: £20.33

Our Price From Excl. VAT: £15.25 From Incl. VAT: £18.30

You Save: £2.03 (10%)

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Product Description


Designed to provide the highest degree of protection and greatest efficiency for your drivetrain. Red Line provides a complete line of drivetrain lubricants which are optimized for differential, transmission or transaxle use over a wide range of temperatures. Proper selection depends upon the manufacturers' requirements and whether the application is for passenger automotive, commercial or racing use.

Red Line Gear Oils contain polyol ester basestocks to provide excellent lubrication even under extreme conditions of high-loading and high- temperatures--their natural lubricity provide excellent slipperiness which reduces the sliding friction in hypoid gears to reduce wear and temperatures.

The synthetic basestocks have a natural multigrade property, so large amounts of unstable thickeners are not required to manufacture our gear oils, which means that Red Line Gear Oils will provide a stable viscosity for even extended periods of use. Red Line also manufactures gear oils which can be used in limited-slip differentials without the use of additional friction modifiers.

RED LINE MT-90 HIGH-PERFORMANCE GEAR OIL is a fully-synthetic ester-based lubricant designed for use in manual transmissions and front-wheel-drive transaxles. This shear-stable formula resists breakdown for extended periods and offers more consistent viscosity in warm and cold temperatures for less gear noise and improved shifting. This fluid is less slippery for improved synchronizer coefficient of friction and offers stronger film strength for better wear protection.

Suitable replacement for:

  • BMW 81 22 9 407 305
  • Castrol BOT 130M
  • Castrol BOT 328
  • Castrol SAF AG4
  • Castrol SHC 630
  • Castrol TAF-X 75w-90
  • Castrol Syntrans Transaxle 75W-90
  • Ford F32Z-19C547-MA
  • Ford M2C175-A
  • Ford M2C200-B
  • Ford WSS-M2C203-A1
  • Ford XT-4-QGL
  • GM 12345371
  • GM 12345724
  • GM 12345871
  • GM 12346074
  • GM 89021806
  • GM 89021806
  • GM 89021807
  • GM-Daewoo EDS-M-8049
  • Hyundai 08950-00010-A
  • Jeep 0489722AA
  • Mazda (MES) 115A
  • Nissan Mission Oil MP-G HQ
  • Toyota 08885-80917
  • Toyota 08885‐81023
  • Toyota 08885‐81026
  • VW/Audi G 005 000
  • VW/Audi G 005 100
  • VW/Audi G 045 190 A2
  • VW/Audi G 052 145
  • VW/Audi G 052 157
  • VW/Audi G 052 911
  • VW/Audi G51
  • VW/Audi G50


  • 75W90 GL-4 gear oil (similar to SAE 5W40/10W40 engine oil viscosity).
  • Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota.
  • Offers quicker shifts, perfect synchronizer coefficient of friction.
  • Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage.
  • High performance gear protection and longer synchro life.
  • Eliminates notchy shifting, even when cold.
  • Satisifies the gear oil viscosity requirements of 75W, 80W and motor oil viscosities of SAE 40, 10W40, and 15W40.
  • Recommended for GL-1, GL-3, and GL-4 applications, as well as where most special synchromesh fluids are specified.


  • Appropriate coefficient of friction for most manual transmission synchronizers (other's synthetic gear oils are often too slippery for proper synchro engagement).
  • Red Line offers lubricants to pinpoint nearly every transmission application.
  • MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears.
  • Excellent gear and synchro protection, balanced slipperiness for easier shifting in cold climates.
  • Excellent for high- and low-mile transmissions Compatible with petroleums and other synthetics.



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