---
product_id: 48189253
title: "Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart."
brand: "red line"
price: "₨1654"
currency: SCR
in_stock: true
reviews_count: 13
category: "Red Line"
url: https://www.desertcart.sc/products/48189253-red-line-50304-mt-90-75w-90-gl-4-manual
store_origin: SC
region: Seychelles
---

# Perfect synchronizer friction for smoother shifts 75W-90 viscosity for optimal gear protection Reliable cold-temp performance, no notchy shifts Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart.

**Brand:** red line
**Price:** ₨1654
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift smoother, protect harder — the ultimate gear oil upgrade you can’t afford to miss!

## Quick Answers

- **What is this?** Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart. by red line
- **How much does it cost?** ₨1654 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/48189253-red-line-50304-mt-90-75w-90-gl-4-manual)

## Best For

- red line enthusiasts

## Why This Product

- Trusted red line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Shift Like a Pro:** Engineered with the perfect coefficient of friction to eliminate notchy shifting—even in cold starts.
- • **Cold Weather Ready:** Maintains smooth, quiet shifting and reduces gear whine at low temperatures and high heat.
- • **Synchro-Safe Formula:** Free from reactive sulfurs found in GL-5 oils, ensuring brass synchros stay corrosion-free and durable.
- • **Trusted Legacy Since 1979:** Red Line’s proven performance means no compromises—join thousands of enthusiasts upgrading their ride.
- • **Gear Protection That Lasts:** High-performance GL-4 formula extends synchro and gear life, keeping your transmission in peak condition.

## Overview

Red Line MT-90 75W-90 GL-4 Manual Transmission Lubricant is a premium gear oil designed for manual transmissions and transaxles. It delivers superior gear and synchronizer protection with a perfect friction balance for effortless shifting, even in cold conditions. Safe for brass synchros and compatible with GL-1, GL-3, and GL-4 applications, this lubricant reduces gear noise and extends transmission life, making it a top choice for performance-minded drivers since 1979.

## 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.

Review: Not the cheapest, but I can feel the difference - Recently used this to replace the transmission and diff oil in my Mk1 Mazda MX5, and I'm very impressed with it. I've had a bit of a notchy change from first to second for as long as I've had the car, especially when cold. While it hasn't disappeared completely, it's much better now with this new transmission oil. Worth the extra cost in my opinion
Review: Jeep Transmission - I used this in my 2000 Jeep Wrangler 4 Liter when I did a full oil change. It sounds quieter with less whine and the shift appears slicker. I'll try and keep note over the next 3000 miles.

## Features

- HIGH PERFORMANCE - gear protection and longer synchro life. Recommended for GL-1, GL-3, and GL-4 applications.
- QUICKER SHIFTS - perfect synchronizer coefficient of friction and eliminates notchy shifting, even when cold
- REQUIREMENTS - gear oil viscosity of 75W; 80W; SAE 40 10W40 and 15W40 motor oil
- POPULAR GEAR OIL 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
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000CPCBEQ |
| Best Sellers Rank | 29,886 in Automotive ( See Top 100 in Automotive ) 70 in Gear Oils |
| Brand | Red Line |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,738) |
| Date First Available | 28 Mar. 2012 |
| Item Weight | 771 g |
| Item model number | 50304 |
| Manufacturer | Yukon Gear & Axle |
| Manufacturer part number | 50304 |
| OEM Part Number | 50304 |
| Product Dimensions | 22.86 x 10.16 x 10.16 cm; 771.11 g |
| Viscosity | 75W-90 |

## Product Details

- **Brand:** Red Line
- **Item weight:** 771 g
- **Liquid volume:** 32 Fluid Ounces
- **Material:** Brass
- **Package information:** Bottle

## Images

![Red Line (50304) MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart. - Image 1](https://m.media-amazon.com/images/I/61iZ6pnD7aL.jpg)

## Questions & Answers

**Q: Hello  can you tell me if that oil is correct for my car toyota corolla 1.4vvt 56plate**
A: Hi, I am not sure . Some need the semi synthetic others fully synthetic. If your manual says semi or fully synthetic go with that. There are semi and fully synthetic versions of the RedLine gear oil.

**Q: Hi, is this suitable for a F31 330d bmw 2016? Rear differential**
A: No. Definitely not suitable. Redline MT90 contains friction modifiers to help syncromesh operation in Manual Gearboxes and particularly suitable for older cars with worn syncro cones (and is fantastic oil in that context). I suggest you refer to your manual of dealer, Opie Oils recommend Febi Bilstein 75w-85 GL5 oil BUT there are variants with X drive that may require LSD oil depending on type of diff in car.

**Q: Is this good for BMW 320d e92?**
A: The oil in the BMW Coupe 320d (2006 to 2010) gearbox is a 75W80 GL-4 oil. 
So you would be after something like the Red Line MTL which meets the BMW spec. https://www.amazon.co.uk/Redline-manual-trans-quart-GL-4/dp/B000CPCBEG

## Customer Reviews

### ⭐⭐⭐⭐⭐ Not the cheapest, but I can feel the difference
*by D***Y on 15 November 2020*

Recently used this to replace the transmission and diff oil in my Mk1 Mazda MX5, and I'm very impressed with it. I've had a bit of a notchy change from first to second for as long as I've had the car, especially when cold. While it hasn't disappeared completely, it's much better now with this new transmission oil. Worth the extra cost in my opinion

### ⭐⭐⭐⭐⭐ Jeep Transmission
*by T***D on 26 November 2016*

I used this in my 2000 Jeep Wrangler 4 Liter when I did a full oil change. It sounds quieter with less whine and the shift appears slicker. I'll try and keep note over the next 3000 miles.

### ⭐⭐⭐⭐⭐ For Mazda MX5 gearbox
*by R***O on 14 January 2013*

Did a bit of research on the tinernet and folks were saying this this transformed thier gear changing. Mine was stiff and nochy until renewing oil with Red Line MT-90, now gear changing is slick even in the cold weather.

## Frequently Bought Together

- Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart
- Red Line 57904 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart
- Slippery Pete - Fluid Pump for Standard Quart Bottles - 8cc per Pump Stroke and 3rd Hand Adapter, Transfer Gear Oil, Transmission and Differential Fluid (28mm)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-27*