---
product_id: 343633702
title: "50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)"
brand: "red line"
price: "B/.274"
currency: PAB
in_stock: true
category: "Red Line"
url: https://www.desertcart.com.pa/products/343633702-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle
store_origin: PA
region: Panama
---

# Up to 300°F heat resistance Optimized for manual transmissions 75W-90 GL-4 viscosity 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)

**Brand:** red line
**Price:** B/.274
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift smarter, not harder — the lubricant your manual transmission deserves!

## Quick Answers

- **What is this?** 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack) by red line
- **How much does it cost?** B/.274 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/343633702-50304-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

- • **Cold-Start Performance:** Ensures excellent shifting even in low temperatures—no more sluggish starts
- • **Universal Compatibility:** Meets GL-1, GL-3, and GL-4 specs for broad manual transmission and transaxle use
- • **High-Temp Gear Protection:** Withstands temperatures up to 300°F to prevent gear wear and rattle
- • **Precision Friction Control:** Perfect synchronizer coefficient of friction for effortless downshifts
- • **Seamless Shifting Experience:** Eliminates notchy shifting for smooth gear changes every time

## Overview

Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to deliver smooth, precise shifting and robust gear protection. Engineered for manual transmissions and transaxles, it excels in high-temperature environments up to 300°F and ensures optimal synchronizer friction for effortless gear engagement. Trusted by enthusiasts and professionals alike, this 2-pack offers 64 fluid ounces of high-performance gear oil that eliminates gear noise and enhances transmission longevity.

## 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.

## Features

- manufacturer: Red Line Oil
- Item Trademark: RED LINE OIL
- Item Weight: pounds, pounds, 1.99, 1.99
- Item Category: Machine Lubricant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NT5V8RW |
| Best Sellers Rank | #14,122 in Automotive ( See Top 100 in Automotive ) #247 in Automotive Oils |
| Brand | Red Line |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.9 out of 5 stars 590 Reviews |
| Item Form | Oil |
| Item Weight | 1.99 Pounds |
| Item weight | 1.99 Pounds |
| Liquid Volume | 64 Fluid Ounces |
| Liquid volume | 64 Fluid Ounces |
| Manufacturer | Red Line |
| Model Number | 50304 |
| Number of Items | 1 |
| Number of Packs | 2 |
| Package information | Bottle |
| Part Number | 50304 |
| Recommended Uses For Product | Gear Oil |
| Recommended uses for product | Gear Oil |
| SAE J300 Viscosity Grade | 75W-90 |
| Specific Uses For Product | Manual transmissions and transaxles, GL-1, GL-3, and GL-4 applications |
| UPC | 737534816592 |
| Unit Count | 64 Fluid Ounces |
| Upper Temperature Rating | 300 Degrees Fahrenheit |
| Viscosity | 75W90 |

## Product Details

- **Brand:** Red Line
- **Item weight:** 1.99 Pounds
- **Liquid volume:** 64 Fluid Ounces
- **Package information:** Bottle
- **Recommended uses for product:** Gear Oil

## Images

![50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack) - Image 1](https://m.media-amazon.com/images/I/719nvofbSzL.jpg)

## Questions & Answers

**Q: Is anyone running this in an NV4500 long term? How does it hold up?**
A: I've been running it for 35,000 miles in my 1996 model GM NV4500 without issue.

**Q: Do I pour the entire contents directly in?  Are there any special instructions?**
A: To get maximum benefit of the Red Line you need to replace all the oil in the transmission.  For my car, it took 3.4 quarts so I bought four and filled it up until fluid was level with the bottom of the fill plug.  If you go to the Red Line website, they have which transmission oil is correct for your car and the capacity of the transmission so you will know how much you will need.

**Q: Is this product non-synthetic gl-3?**
A: Synthetic gl -4 oil

**Q: Can i use on 1992 chevy camaro rs?**
A: I would not. It is supposed to be OEM recommended for my 98 vw Cabrio 5speed. So Put $46 worth in and at0°F I could not shift the car until 30 minutes of idling. second Synchromesh was very fussy at 20deg

## Frequently Bought Together

- Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)
- 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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**Shop now:** [https://www.desertcart.com.pa/products/343633702-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle](https://www.desertcart.com.pa/products/343633702-50304-mt-90-75w-90-gl-4-manual-transmission-transaxle)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-10-10*