high performance gear oil Red Line MT-90 75W90 GL-4 Gear Oil
SKU: 21602983114
high performance gear oil

high performance gear oil Red Line MT-90 75W90 GL-4 Gear Oil

Sale price$23.60 Regular price$26.22
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Ships within 48 hours · Estimated delivery Jul 2 - Jul 7

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Description

high performance gear oil Red Line MT-90 75W90 GL-4 Gear OilRed Line MT90 Manual Transmission Lubricant 1QT Universal RallySport Direct is proud to bring you some of the best lubricants in the industry brought to you by Red Line. This is the very popular and highly utilized Red Line MT 90 Manual Transmission Gear Oil. This gear oil has been specially formulated to have the appropriate coefficient of friction for most manual transmission synchronizers that are combined with a great viscosity balance to help

Red Line MT90 Manual Transmission Lubricant 1QT Universal

RallySport Direct is proud to bring you some of the best lubricants in the industry brought to you by Red Line. 

 

This is the very popular and highly utilized Red Line MT-90 Manual Transmission Gear Oil. This gear oil has been specially formulated to have the appropriate coefficient of friction for most manual transmission synchronizers that are combined with a great viscosity balance to help cure hard shifting issues in most manual transmissions. The MT-90 is a fully synthetic lubricant with a very high viscosity index which provides relatively constant viscosity as temperature changes to provide your shifts with a consistent feel through a variety of temperatures while offering optimal friction protection.

 

DETAILS:

  • 75W90 - GL-4 gear oil (similar to SAE 5W40 / 10W40 engine oil viscosity)
  • Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola transmissions and Atlas transfer cases for off-road
  • Offers quicker shifts, perfect synchronizer coefficient of friction
  • Safe for brass synchros, as it lacks the reaction sulfurs found in most GL-5 oils that can cause damage
  • High-performance gear protection and longer synchro life
  • Helps eliminate notchy shifting even in cold conditions
  • Satisfies the gear oil viscosity requirements of 75W90, 80W90, 90, 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
  • Sold individually in a 1-quart container

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21602983114

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Reviewed in the United States on March 15, 2026
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★★★★★ 1
Product leaks into the cap
Size: 3.4 Fl Oz (Pack of 1), Size: 3.4 Fl Oz (Pack of 1)
The packaging appears to be defective and potentially tampered with. Specifically, the nozzle is a different color from the rest of the tube—one that is not consistent with the brand’s standard packaging (I am familiar with this brand and have purchased it before). Additionally, the cap does not close properly, causing the product to leak into the lid and resulting in unnecessary waste. This raises serious concerns about the product’s authenticity, quality control, and whether it may have been previously opened or altered.
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Reviewed in the United States on March 24, 2026
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J. Michelle
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For babies and fur babies
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