To see product details, add this item to your cart. You can always remove it later.
FREE Returns
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.
Other Sellers on Amazon
Added
Sold by: Goldan Automotive
Sold by: Goldan Automotive
(599 ratings)
98% positive over last 12 months
Shipping rates and Return policy
Added
Sold by: SG MARKETPLACE
Sold by: SG MARKETPLACE
(4410 ratings)
66% positive over last 12 months
Shipping rates and Return policy
Added
Sold by: Amazon.com
Sold by: Amazon.com
Shipping rates and Return policy

Red Line 50305, MT-90 75W-90 GL-4, Synthetic Gear Oil for Manual Transmission and Transaxles - 1 Gallon

4.8 4.8 out of 5 stars 1,520 ratings

To see product details, add this item to your cart. You can always remove it later.
FREE Returns
Save 25% at checkout Shop items
Available at a lower price from other sellers that may not offer free Prime shipping.
1 Gallon

Purchase options and add-ons

Material Synthetic
Brand Red Line
Liquid Volume 128 Fluid Ounces
Item Weight 2.27 Kilograms

About this item

  • Provides High performance gear protection and longer synchro life
  • Offers quicker shifts, perfect synchronizer coefficient of friction and eliminates notchy shifting, even when cold
  • Recommended for GL-1, GL-3 and GL-4 applications, as well as where most special synchromesh fluids are specified. Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage
  • Satisfies gear oil viscosity requirements of 75W; 80W; SAE 40 10W40 and 15W40 motor oil
  • Excellent for high- and low-mile transmissions and compatible with petroleums and other synthetics
See more product details

Frequently bought together

$90.60 ($0.71/Fl Oz)
Get it as soon as Tuesday, Apr 2
In Stock
Sold by R/A Hoerr Incorporated and ships from Amazon Fulfillment.
+
$90.60 ($0.71/Ounce)
Get it as soon as Tuesday, Apr 2
In Stock
Sold by R/A Hoerr Incorporated and ships from Amazon Fulfillment.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
These items are shipped from and sold by different sellers.
Choose items to buy together.

From the brand

Product Description

Red Line MT-90 Manual Transmission Lubricant A 75W90 GL-4 gear oil (SAE 10W/15W/40 engine oil viscosity) designed for use in manual transmissions and transaxles. Red Line MT-90 Manual Transmission Lubricant provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting. Red Line MTL / MT-90 BENEFIT SUMMARY * Eliminates notchy shifting * Designed for manual transmissions and transaxles * Perfect synchronizer coefficient of friction * Enables high-speed downshifting * Excellent shifting even when cold * Eliminates gear whine and rattle at high temperatures * High-performance gear protection * Non-corrosive toward synchronizers * Satisfies manual transmissions and transaxles requiring motor oils or GL-1, GL-3, or GL-4 gear oils.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

Feedback

Red

Red Line 50305, MT-90 75W-90 GL-4, Synthetic Gear Oil for Manual Transmission and Transaxles - 1 Gallon


Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?

/
/
/
/
Please sign in to provide feedback.

What's in the box

  • MT-90 75W-90 GL-4
  • Compare with similar items

    This Item
    Red Line 50305, MT-90 75W-90 GL-4, Synthetic Gear Oil for Manual Transmission and Transaxles - 1 Gallon
    Red Line 50305, MT-90 75W-90 GL-4, Synthetic Gear Oil for Manual Transmission and Transaxles - 1 Gallon
    Recommendations
    Red Line 30505 D4 Synthetic Automatic Transmission Fluid (ATF) - Gallon
    dummy
    Red Line | 58304 (75W90) Non-Limited Slip Synthetic Gear Oil | 1 Quart | Pack of 2
    dummy
    Valvoline High Performance SAE 80W-90 Gear Oil 1 QT
    dummy
    Red Line 58204-2PK Heavy ShockProof Gear Oil - 1 Quart, (Pack of 2)
    dummy
    Red Line 50304, MT-90 75W-90 GL-4, Synthetic Gear Oil for Manual Transmission and Transaxles, Safe for Brass Synchros, Eliminates Notchy Shifting, Even When Cold - 2 Quart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Details
    Added to Cart
    Price$90.60$63.92-15% $39.99
    List:$47.06
    $12.49$40.99-13% $40.37
    List:$46.20
    Delivery
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Get it as soon as Tuesday, Apr 2
    Customer Ratings
    Value for money
    4.6
    4.7
    4.7
    4.7
    4.7
    Mileage
    4.8
    4.8
    5.0
    4.8
    Light weight
    4.6
    4.2
    4.7
    Sold By
    R/A Hoerr Incorporated
    R/A Hoerr Incorporated
    R/A Hoerr Incorporated
    Amazon.com
    R/A Hoerr Incorporated
    Edo Performance
    liquid volume
    128 fluid ounces
    1 gallons
    1 quarts
    1 quarts
    1 quarts
    64 fluid ounces
    form
    Fluids,Liquid,Oil
    Liquid
    Oil
    Oil
    Oil
    Oil
    weight
    2.27 kilograms
    7 pounds
    2 pounds
    1.99 pounds

    Looking for specific info?

    Customer reviews

    4.8 out of 5 stars
    4.8 out of 5
    1,520 global ratings

    Customers say

    Customers like the quality, gear oil and smoothness of shifting of the machine lubricant. They mention that it works well, has no issues and that it shifts like a hot knife through butter. They are also satisfied with noise. However, some customers have different opinions on grinding, and value.

    AI-generated from the text of customer reviews

    129 customers mention119 positive10 negative

    Customers say the machine lubricant improves the smoothness of shifting. They mention that it works great for their Mazda 3, and the transmission shifts smoother and quieter. Customers also say that it makes shifting a breeze, and the gears feel smoother.

    "...The fluid held up fantastically, and always shifted smooth and accurately...." Read more

    "...Awesome and it's shifting very well..." Read more

    "...Quieted it right down, and now instead of a choppy shift it's smooth as silk. I still don't believe it...." Read more

    "...What I know for sure is my shifting problems went away, and I enjoy rowing gears more than ever!" Read more

    108 customers mention105 positive3 negative

    Customers are satisfied with the quality of the lubricant. They mention that it works well and shifts smoothly. Some say that it provides superior performance in manual transmission applications. Overall, most are happy with their purchase and recommend it to others.

    "...The fluid held up fantastically, and always shifted smooth and accurately...." Read more

    "worked very smooth on my 06 toyota tacoma 4WD manual transmission. Awesome and it's shifting very well..." Read more

    "...Very good reputation." Read more

    "...The Red Line MT-LV is significantly more stable, being only five points thinner than this MT-90 when hot, and matching the hot thickness of this..." Read more

    37 customers mention34 positive3 negative

    Customers are satisfied with the oil. They mention that it is the best manual transmission oil money can buy, it is great gear oil for a transmission that needs GL-4 lube, and it is excellent for older transmissions and transmissions that have soft metals. Some say that the oil is good enough and that it stands the test of time as one of the best.

    "This is without a doubt one of the best oils for manual transmissions. It is expensive but Amazon seems to have the best prices anyway...." Read more

    "...Red line has truly stood the test of time as one of the best manual transmission fluids." Read more

    "Redline gear oils are amazing, My 1986 Nissan 300zx shifts like new again!..." Read more

    "...This is better than factory recommended lube, the manual transmissions are quiet and shift smoothly after using this.. if you have a Jeep YJ or TJ..." Read more

    25 customers mention21 positive4 negative

    Customers like the noise of the lubricant. They say it makes the gears quieter and easier to shift. Some say that it completely silences their shifts and makes them smoother. Overall, customers are satisfied with the noise level of the product.

    "...TL;DR: If you like your manual transmission to shift like butter, quiet, and precise, buy this fluid." Read more

    "...I should have done this immediately after the rebuild. Quieted it right down, and now instead of a choppy shift it's smooth as silk...." Read more

    "...5th gear became massively more quiet. Gl-4, low sulfur for the brass syncronizers only is real. Redline is NOT snakeskin oil...." Read more

    "...the redline worked best with my AX15 made transmission much quieter and smoother. will be buying again after another 30k miles" Read more

    47 customers mention32 positive15 negative

    Customers are mixed about the value of the machine lubricant. Some mention it's great value, the best manual transmission fluid at any price, and well worth it. However, others say that it'd be better off with another product.

    "...at more than twice the price of competing gear oil, I it's still worth every penny as far as I'm concerned. I'll never use anything else again." Read more

    "...After swapping fluid for MT90 I can assure you the fluid is worth every penny...." Read more

    "...It is expensive but Amazon seems to have the best prices anyway. Buying the gallon seems to be the most cost effective option...." Read more

    "...its a but more expensive than the regular stuff but its more than worth the premium, 10/10 would buy again." Read more

    10 customers mention6 positive4 negative

    Customers are mixed about the grinding with some saying it's easier to shift and there's no more grinding going into any gears, while others say that 3rd gear was grinding badly, especially when downshifting. However, the grinding stopped after a few miles.

    "...I accidentally shift a bit too quickly, because there's absolutely no grind at all anymore!My TJ isn't a pavement princess...." Read more

    "Top shelf product. Used on a manual trans 2007 Scion tC. 3rd gear was grinding badly, especially when downshifting..." Read more

    "...Once warmed up, 5th gear wouldn't grind anymore, and 3rd gear would only grind if the driver shoved the handle quickly, although the shifter still..." Read more

    "...Much less gear noise, easier to shift and no more grinding going into any gears!" Read more

    Gear fluid for my 90 Toyota Pickup
    5 Stars
    Gear fluid for my 90 Toyota Pickup
    I bought this because as others stated on Toyota forms that this is the best, let me just say that they aren't lying. This fluid almost completely brought my old (245k miles) trans back to life, mind you the previous person neglected it. It would pop outta first, grind going into second and 4th if not shifted JUST right. So now with this fluid change and the shifter bushings replaced this trans runs great compared to what it was lol
    Thank you for your feedback
    Sorry, there was an error
    Sorry we couldn't load the review

    Top reviews from the United States

    Reviewed in the United States on July 10, 2021
    Size: 1 GallonVerified Purchase
    2 people found this helpful
    Report
    Reviewed in the United States on September 2, 2023
    Size: 1 GallonVerified Purchase
    Reviewed in the United States on November 11, 2018
    Size: 1 GallonVerified Purchase
    9 people found this helpful
    Report
    Reviewed in the United States on March 10, 2024
    Size: 1 GallonVerified Purchase
    Reviewed in the United States on September 26, 2022
    Size: 1 GallonVerified Purchase
    Reviewed in the United States on March 26, 2024
    Size: 1 GallonVerified Purchase
    Reviewed in the United States on February 12, 2024
    Size: 1 GallonVerified Purchase

    Top reviews from other countries

    Translate all reviews to English
    John
    5.0 out of 5 stars Great product
    Reviewed in Canada on August 11, 2021
    Size: 1 GallonVerified Purchase
    Lucio
    5.0 out of 5 stars Il Top
    Reviewed in Italy on February 22, 2024
    Size: 1 GallonVerified Purchase
    kevin burton
    5.0 out of 5 stars This Gear Oil Literally Changed My Life
    Reviewed in Canada on January 26, 2020
    Size: 1 GallonVerified Purchase
    2 people found this helpful
    Report
    Fred Bristow
    5.0 out of 5 stars Great stuff
    Reviewed in Canada on March 11, 2024
    Size: 1 GallonVerified Purchase
    Dave
    5.0 out of 5 stars shipped fast, exactly what i needed
    Reviewed in Canada on January 1, 2021
    Size: 1 GallonVerified Purchase