---
product_id: 715725616
title: "50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)"
brand: "red line"
price: "€ 276.83"
currency: EUR
in_stock: true
url: https://www.desertcart.fr/products/715725616-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle
store_origin: FR
region: France
---

# Friction formula for quicker, smoother shifts 75W-90 viscosity for optimal gear protection GL-4 rating safe for brass synchros, no corrosive sulfurs 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (4 Pack)

**Brand:** red line
**Price:** € 276.83
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift into the fast lane with flawless gear protection!

## 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?** € 276.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/715725616-50304-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

- • **Precision Gear Defense:** Advanced 75W-90 viscosity ensures maximum protection and longevity for your manual transmission.
- • **Versatile Compatibility:** Perfectly suited for GL-1, GL-3, and GL-4 applications, plus compatible with various motor oils like 10W40 and 15W40.
- • **Synchro-Friendly Formula:** GL-4 certified and free from reactive sulfurs, it safeguards delicate brass synchros from wear and corrosion.
- • **Trusted Legacy Performance:** Backed by Red Line’s 40+ years of innovation, delivering uncompromising quality and reliability for your drivetrain.
- • **Seamless Shifting Experience:** Engineered friction coefficient eliminates notchy shifts—even in cold starts—giving you buttery smooth gear changes.

## Overview

Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to extend synchro life and provide smoother, quicker shifts. Its unique formula protects brass synchros by eliminating harmful reactive sulfurs, making it ideal for GL-1, GL-3, and GL-4 gear applications. Trusted since 1979, this lubricant ensures superior performance and durability for your manual transmission system.

## Description

Red Line 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 |
|---------------|-------|
| Manufacturer | RED LINE |
| Brand | Red Line |
| Model | (1063017) MT-90 75W90 GL-4 - QUART |
| Product Dimensions | 10.16 x 10.16 x 22.86 cm; 907.18 g |
| Item model number | 50304 |
| Manufacturer Part Number | 50304 |
| Item Weight | 907 g |
| Viscosity | 75W-90 |

## Product Details

- **Material:** Oil
- **Brand:** Red Line
- **Package information:** Bottle
- **Liquid volume:** 128 Fluid Ounces
- **Item weight:** 2 Pounds

## 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 Name** 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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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-22*