gear oil 90 Red Line 50305 MT-90 75W90 GL-4 Gear Oil
SKU: 88898651712
gear oil 90

gear oil 90 Red Line 50305 MT-90 75W90 GL-4 Gear Oil

Sale price$18.63 Regular price$20.70
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Ships within 48 hours · Estimated delivery Jul 3 - Jul 8

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Description

gear oil 90 Red Line 50305 MT-90 75W90 GL-4 Gear OilRed Line MT 90 75W90 GL4 gallon 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 is combined with a great viscosity balance to help cure hard shifting issues in

Red Line MT-90 75W90 GL4 - gallon

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 is 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-gallon 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: 88898651712

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★★★★★ 5
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San Leandro, US
★★★★★ 4
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My dogs love these bones.
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Reviewed in the United States on March 25, 2026
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Kelli Thornburg
Lake Worth, US
★★★★★ 5
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Color: Dogwood & Calming, Size: Medium
Dogs love these sticks! Must smell and taste like real wood because it keeps my puppy from bringing real sticks in the house from outside. She is a heavy chewer and these sticks keep her occupied. We are on our 2nd set.
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Reviewed in the United States on May 27, 2026
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C. H.
Port Orchard, US
★★★★★ 5
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LC
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Reviewed in the United States on May 1, 2026

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