SKU: 64386670932
75w90 gear oil

75w90 gear oil Red Line 50305 MT-90 75W90 GL-4 Gear Oil

Sale price$22.74 Regular price$25.27
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Ships within 48 hours · Estimated delivery Oct 8 - Oct 13

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Description

75w90 gear oil 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: 64386670932

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4.5 ★★★★★
Based on 7 reviews
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J
Verified Purchase
Jennifer
Dallas, US
★★★★★ 4
Long lasting
Color: Dogwood & Calming, Size: Medium
My dogs love these bones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
K
Verified Purchase
Kelli Thornburg
Grantham, US
★★★★★ 5
Puppy loves these sticks!
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.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
C
Verified Purchase
C. H.
Lake Worth, US
★★★★★ 5
Great value for the price, highly recommend
Color: Dogwood & Calming, Size: Medium
Our dog loves these and chews them down to nothing. They are a great value for the money and the use your dog gets out of them. The size is just right for our doberdor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
L
Verified Purchase
LC
Lowell, US
★★★★★ 3
Our dog loves it but it wasn’t durable enough to last
Color: Dogwood Jack, Size: Large, Color: Dogwood Jack, Size: Large
Our lab took to it as soon as we gave it to her. Perfect size for our 80 lb yellow lab. However, now that it’s in about 10 days, she’s able to break off chunks from this bone that are dime size or larger, and we have to throw it away
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
M
Verified Purchase
Matthew Anderson
Lowell, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026

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