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Red Line

Red Line 50205 SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant (MTL) Car Gear Oil - 1 Gallon

  • Based on 568 reviews
Condition: New
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Availability: 16 left in stock
Fulfilled by Amazon
Arrives Tuesday, Jul 15
Order within 6 hours and 28 minutes
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Size: 1 Gallon (128 Ounces)


Features

  • HIGH PERFORMANCE - Gear protection and longer synchro life. Recommended for GL-1, GL-3, and GL-4 applications, as well as where most special synchromesh fluids are specified
  • OFFERS QUICKER SHIFTS - MLT Gear Oil with balanced friction control for most manual transmission synchronizers. Other synthetic gear oils are often too slippery
  • SAFE FOR BRASS SYNCHROS - GL-4 Gear Oil lacks the reactive sulfurs found in most GL-5 oils that cause damage. Recommended for GL-1, GL-3 & GL-4 applications
  • POPULAR MOTOR OIL FOR - BMW, Honda/Acura, Ford Focus, late-model Mini Cooper, Land Rover/Range Rover LT77S, Mitsubishi, Dodge & Jeep NV1500, NV3500, NV3550 & NV5600 truck transmissions
  • WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

Material: Synthetic


Brand: Red Line


Package Information: Jug


Liquid Volume: 128 Fluid Ounces


Item Weight: 7 Pounds


Material: ‎Synthetic


Brand: ‎Red Line


Package Information: ‎Jug


Liquid Volume: ‎128 Fluid Ounces


Item Weight: ‎7 Pounds


Recommended Uses For Product: ‎Lubricant


Viscosity: ‎185


Specific Uses For Product: ‎Manual Transmission Lubrication, Transaxle Lubrication, BMW, Honda and Acura, Ford Focus, late-model Mini Cooper, Land Rover/Range Rover LT77S, Dodge and Jeep NV1500, NV3500 and NV5600 truck transmissions, GL-1, GL-3 and GL-4 applications, and where most special synchromesh fluids are specified.


Item Form: ‎Oil


Global Trade Identification Number: ‎54


Manufacturer: ‎Red Line


Unit Count: ‎128.0 Fluid Ounces


UPC: ‎083522502054


Number of Items: ‎1


Model: ‎50205


Item Weight: ‎7 pounds


Product Dimensions: ‎6.75 x 4.5 x 11 inches


Item model number: ‎50205


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎50205


OEM Part Number: ‎50205


Special Features: ‎75W80, Gear Oil|Drivetrain & Differentials, Manual Transmission Gear Oil, MTL 75W80 Manual Transmission Gear Oil GL-4 1 Gallon Red Line Oil


Date First Available: July 6, 2012


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jul 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • 3rd Gen Taco Manual
Size: 1 Gallon (128 Ounces)
2020 Tacoma shifting smooth and did this 2 months ago and about 1000 miles. Would buy again
Reviewed in the United States on June 6, 2025 by ClayHPG
    • Gold Standard for NV5600 Dodge 6 speeds (not G56).
Size: 1 Gallon (128 Ounces)
I’ve tried Pennzoil Synchromesh and Amsoil Synchromesh but Redline MTL is the gold standard. 6 quarts through the tower (without coolers) works great for brass or lined synchros.
Reviewed in the United States on May 26, 2025 by Tizzy
    • Worked for an AX15 5-Speed
Size: 1 Gallon (128 Ounces)
Noticeable improvement with this transmission fluid.
Reviewed in the United States on March 13, 2025 by Agent Smith
    • Cured serious shifting issues in my Mazdaspeed3
Size: 1 Gallon (128 Ounces)
Review Image by Customer Customer
(PLEASE NOTE: old oil shown in photo is the old genuine Mazda fluid! It is NOT used Redline oil.) I used it in my 2010 Mazdaspeed3 with around 75,000 original miles. I changed it myself, shops in the area didn't want to bother with it. The original trans oil had never been changed (quite simply because, Mazda claims the original factory fluid is a "lifetime" fluid, which it is obviously NOT), and came out of the car looking dark as cocacola, and thick as (real) maple syrup. Whereas this new liquid is transparent, with the slightest hint of red, and flows quite a bit easier than the old, nasty black fluid. Before I changed it, I was having serious issues getting stuck shifting into 1st and 2nd (the shifter often wouldn't want to move all the way into gear). It was so bad that I was considering getting rid of the car. But this new oil fixed it 100%. With the old oil I also had an issue with 2nd gear going in with a crunch (worn synchro probably?), this oil didn't completely eliminate that crunch but it reduced it a lot, and now it goes away completely when the car is fully warmed up. I still can't believe Mazda doesn't have a service interval for changing the transmission fluid in the speed3. This fluid absolutely needs to be changed. As for how to change it in the Mazdaspeed3: https://www.youtube.com/watch?v=yWMk_Q1pE8c Tip: If you can manage to find a funnel long enough, or extend the one you have, then you won't need to remove the airbox. I extended mine with a plastic water hose. ... show more
Reviewed in the United States on February 18, 2018 by Customer Customer
    • The best manual transmission fluid that I have used.
Size: 1 Gallon (128 Ounces)
My transaxle shifted much more smoothly after I switched to this transmission fluid. The synchros also seemed to respond quicker.
Reviewed in the United States on October 9, 2024 by dlubin
    • As expected
Size: 1 Gallon (128 Ounces)
As expected
Reviewed in the United States on May 6, 2025 by Evie Mixell
    • Redline MTL for the NSG370 2005 Jeep TJ Wrangler 6 Speed
Size: 1 Gallon (128 Ounces)
I have a 2005 TJ and 2008 JK with the 6 speed Manual NSG370. I didn’t realize the previous owner put in GL5 ( I suspect) on the 2005. I got MTL in too late, but it still extended the life of the transmission. I got it rebuilt on the 05 and MTL which is GL4 gear oil works with the synchros on this transmission. You HAVE to take care of your fluids. If anyone says “leave old fluid in” I would be hesitant to take their advice. Transmissions are machines, they have gears etc, and the metal needs this gear oil to lubricate and avoid unnecessary wear or damage. If you take out oil gear oil and put in new gear oil, it should only be better. If you changed the fluid and had a failure, that’s failure was coming wether you like it or not. It’s not my opinion, I frankly don’t care if someone leaves their oil in and smokes their transmission, that’s up to them, free country, I’m just warning to think about the logic behind “leave old broken down fluid in your transmission “ advice if you are not experienced, illogical advice can get through. ... show more
Reviewed in the United States on June 26, 2020 by J. Malmquist
    • Great fluid
Size: 1 Gallon (128 Ounces)
Transmission shifts smoothly
Reviewed in the United States on October 28, 2024 by Brad C.

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