---
product_id: 592333607
title: "50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)"
brand: "red line"
price: "$U9360"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/592333607-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle
store_origin: UY
region: Uruguay
---

# Faster, smoother shifts even in cold temps 75W-90 viscosity for optimal gear protection GL-4 safe formula protects brass synchros 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)

**Brand:** red line
**Price:** $U9360
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift smarter, not harder — gear up with Red Line!

## Quick Answers

- **What is this?** 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) by red line
- **How much does it cost?** $U9360 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/592333607-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle)

## 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

- • **Trusted Legacy:** Red Line’s proven formula since 1979 outperforms competitors
- • **Cold-Start Ready:** Maintains perfect friction coefficient even at low temperatures
- • **Precision Gear Protection:** Extends synchro life with high-performance GL-4 lubrication
- • **Seamless Shifting Experience:** Eliminates notchy shifts for smooth gear changes every time
- • **Multi-Application Compatibility:** Ideal for GL-1, GL-3, and GL-4 gearboxes and special synchromesh fluids

## Overview

Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to protect gears and extend synchronizer life. Its advanced formula ensures quicker, smoother shifts even in cold conditions, while being safe for brass synchros by avoiding harmful reactive sulfurs. Trusted since 1979, this 4-quart pack delivers reliable performance for GL-1, GL-3, and GL-4 applications, making it the go-to choice for discerning gearheads and professionals alike.

## Description

50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)

## 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 |
|---------------|-------|
| Brand | Red Line |
| Package Information | Bottle |
| Liquid Volume | 128 Fluid Ounces |
| Item Weight | 2 Pounds |
| Viscosity | 75W-90 |
| Item Form | Oil |
| Manufacturer | Red Line |
| Unit Count | 128.0 Fluid Ounces |
| Number of Items | 4 |
| Model | (1063017) MT-90 75W90 GL-4 - QUART |
| Item Weight | 2 pounds |
| Product Dimensions | 4 x 4 x 9 inches |
| Item model number | 50304 |
| Manufacturer Part Number | 50304 |

## Product Details

- **Brand:** Red Line
- **Package Information:** Bottle
- **Liquid Volume:** 128 Fluid Ounces
- **Item Weight:** 2 Pounds
- **Viscosity:** 75W-90

## Images

![50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack) - Image 1](https://m.media-amazon.com/images/I/51zz0TuOOUL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)
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- Red Line 57904 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart (2 Pack)

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**Shop now:** [https://www.desertcart.uy/products/592333607-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle](https://www.desertcart.uy/products/592333607-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle)

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-08*