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Red Line 57905 75W90 Fully Synthetic GL-5 Gear Oil - Gallon

4.8 4.8 out of 5 stars 590 ratings

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1 Gallon (128 Ounces)

Purchase options and add-ons

Material Synthetic
Brand Red Line
Liquid Volume 1 Gallons
Item Weight 5 Pounds

About this item

  • Most popular Red Line gear oil, with thousands of applications for passenger cars, light trucks and racing vehicles
  • Contains additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required
  • This product is not designed for use in most manual transmissions or transaxles in passenger vehicles, since the extreme slipperiness may cause synchronizer mesh issues that lead to shifting problems
  • Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E, SAE J2360 and Chrysler spec MS-9763
  • Suitable replacement for a differential calling for an 80W90 or SAE 90 gear oil
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$90.60 ($0.71/Ounce)
Get it as soon as Monday, Apr 1
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Sold by R/A Hoerr Incorporated and ships from Amazon Fulfillment.
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$90.60 ($0.71/Fl Oz)
Get it as soon as Monday, Apr 1
In Stock
Sold by R/A Hoerr Incorporated and ships from Amazon Fulfillment.
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Red Line 57905 75W90 Fully Synthetic GL-5 Gear Oil - Gallon
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Price$90.60$65.82$74.99$90.60-15% $39.99
List:$47.06
$100.01
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it Apr 2 - 4
Get it as soon as Monday, Apr 1
Get it Mar 29 - Apr 2
Customer Ratings
Value for money
4.6
4.7
4.5
4.7
Mileage
4.6
4.8
4.8
Longevity
4.5
4.7
4.5
Light weight
4.5
4.8
4.6
Sold By
R/A Hoerr Incorporated
Amazon.com
R/A Hoerr Incorporated
R/A Hoerr Incorporated
R/A Hoerr Incorporated
R/A Hoerr Incorporated
liquid volume
1 gallons
32 fluid ounces
128 fluid ounces
1 gallons
1 quarts
128 fluid ounces
form
Oil
Oil
Fluids,Oil
Oil
Oil
Oil
material
Synthetic
Synthetic
Synthetic

From the brand

Product Description

Red Line's 75W90 Synthetic Gear Oil is their most popular gear oil, and is the preferred product in nearly all car and light truck differentials, both conventional and limited-slip. 75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions and transaxles; however, other Red Line lubricants have better frictional properties for rapid synchronization. Exceeds API GL-5. Red Line's Synthetic Gear Oil's are 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 polyolester base stocks 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 base stocks have a natural multi-grade property, so large amounts of unstable thickeners are not required to manufacture Red Line 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.

Product information

Technical Details

Additional Information

Warranty & Support

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Red Line 57905 75W90 Fully Synthetic GL-5 Gear Oil - Gallon


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What's in the box

  • 75W90 GEAR OIL GAL
  • Looking for specific info?

    Customer reviews

    4.8 out of 5 stars
    4.8 out of 5
    590 global ratings

    Customers say

    Customers like the noise-reducing and smoothness-enhancing properties of the gear oil. For example, they say it quiets noisy rear ends, makes the shifts smoother, and is good value for money. Customers are also impresseded with the quality, saying it works wonders for their transmission. Opinions are mixed on smell and shifting.

    AI-generated from the text of customer reviews

    52 customers mention52 positive0 negative

    Customers are satisfied with the quality of the gear oil. They mention that it works wonders for their transmission and that both maintenance jobs went well without issue. Customers also appreciate the robust additive package.

    "...It’s been working well." Read more

    "Best gear oil on the market" Read more

    "...Great product though." Read more

    "...only one to stop the chatter when accelerating through a turn, great diff fluid. Will continue to use redline as my goto oils!" Read more

    10 customers mention10 positive0 negative

    Customers appreciate the value of the machine lubricant. They say it is a great product for the price.

    "...HIGHLY recommended for manual transmissions and worth every cent" Read more

    "Great stuff" Read more

    "High quality gear oil for a great price!" Read more

    "Good value and arrived quickly. Changed the rear end oil on my NA Miata LSD." Read more

    8 customers mention8 positive0 negative

    Customers are satisfied with the noise level of the gear oil. They mention that it quiets noisy rear ends, and there is less gear whine in the lower gears.

    "Put this in my ZO6 ! Seems to shift better and is quieter" Read more

    "...There is less gear whine in the lower gears, which is a bit of bummer sometimes...." Read more

    "Used in an OMC outdrive: speed increased, noise decreased. All I can say for now." Read more

    "...This gear oil usually always quiets noisy rear ends and lasts a very long time...." Read more

    8 customers mention8 positive0 negative

    Customers are happy with the smoothness of the gear oil. They say that their trucks seem smoother, the shifts are smooth, and the transmission feels slick and happy. They also mention that it lubricates gears better.

    "...THIS is the stinky stuff that lubricates gears much better!Use it, and you'll know I speak the truth!" Read more

    "...Felt smoother. Will always use RedLine gear oil from now on." Read more

    "...my WRX because the shifts are easier both ways, the transmission just feels so slick and happy...." Read more

    "I’ve put this on my Subaru sti and the shifts are now soo smooth and awesome (love it) no more noise and foul play I highly recommend this to any..." Read more

    4 customers mention3 positive1 negative

    Customers like the machine lubricant's leakage. They say the differential is silent with no leaks at the outer seals, and the jug didn't leak in shipping.

    "...of the jug, though there was still plenty inside and the seal was mostly present. That's how you know it's a good product." Read more

    "Jug didn’t leak in shipping and it’s oily. What else can be said. This manufacturer has a very good reputation for quality." Read more

    "The only drawback is the molecules are smaller, so it will seep out , (leak) more easily...." Read more

    "...in my 2002 Dodge Ram and the differential is silent with no leaks at the outer seals." Read more

    9 customers mention6 positive3 negative

    Customers have mixed opinions about the shifting of the machine lubricant. Some mention that it makes gear shifts easier and quieter, while others say that it still struggles to shift after 5k miles.

    "Put this in my ZO6 ! Seems to shift better and is quieter" Read more

    "...my transmission, i drove about 6000 miles on it by now and the gear shift like butter in super cold weather and on start up while before it was..." Read more

    "...Redline MT-90 and Shockproof oils in my WRX because the shifts are easier both ways, the transmission just feels so slick and happy...." Read more

    "...Been in my transmission and transfer case for two months now. Notice easier shifts and very slight mpg increase." Read more

    5 customers mention2 positive3 negative

    Customers are mixed about the smell of the machine lubricant. Some mention that it smells crazy, while others say that it sucks.

    "...This has a really strong sulfur smell for the EP rating it has." Read more

    "...Smells crazy, must be what makes it so good. Wife loves the smell too, you can smell the package on the porch from indoors...." Read more

    "...Definitely smells like the ass crack of a gorilla after chipotle though. Be prepared. Works like a charm though...." Read more

    "It was very oily, added an interesting smell to my salad. Recommend adding a good dose of vinegar." Read more

    Stopped my limited slip chatter.
    5 Stars
    Stopped my limited slip chatter.
    Decided to try this on the second diff fluid change @60k. Used Mobil 1 the first change @30K and even after adding 2 additional Ford friction modifiers the limited slip still chattered. I added the 2 bottles of additive before putting this fluid in so I am not sure if I really needed it but after round 1 I installed it anyway. Took a 2500mile trip after installing and not a single noise out of my rear end. Will use this fluid in it from now on. Ford Transit T350HD 3:73 limited slip.
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    Top reviews from the United States

    Reviewed in the United States on September 3, 2023
    Size: 1 Gallon (128 Ounces)Verified Purchase
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    Reviewed in the United States on February 18, 2018
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    Reviewed in the United States on July 25, 2023
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    Top reviews from other countries

    Joaquin
    5.0 out of 5 stars Fast shipping!
    Reviewed in Canada on October 21, 2020
    Size: 1 Gallon (128 Ounces)Verified Purchase