---
product_id: 548593106
title: "Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4)"
brand: "red line"
price: "R24504"
currency: ZAR
in_stock: true
reviews_count: 2
category: "Red Line"
url: https://www.desertcart.co.za/products/548593106-red-line-50305-manual-transmission-mt-90w-gear-oil-1
store_origin: ZA
region: South Africa
---

# 90W viscosity for optimal gear protection Cold climate shifting enhancement Safe for brass synchros, no corrosive sulfurs Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4)

**Brand:** red line
**Price:** R24504
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift smarter, not harder — gear oil that keeps you ahead of the pack!

## Quick Answers

- **What is this?** Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) by red line
- **How much does it cost?** R24504 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/548593106-red-line-50305-manual-transmission-mt-90w-gear-oil-1)

## 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 by Experts:** Recommended by top transmission shops and compatible with major brands like Nissan & VW
- • **Effortless Shifting:** Balanced friction control ensures smoother gear changes even in cold weather
- • **Synchro-Safe Formula:** GL-4 rating protects brass synchros from damage common in GL-5 oils
- • **Legacy of Performance:** Since 1979, Red Line delivers uncompromising quality for racing and street
- • **Precision Gear Protection:** Extends synchro life with shear-stable synthetic formula

## Overview

Red Line 50305 MT-90 is a fully-synthetic, ester-based 90W gear oil engineered for manual transmissions and front-wheel-drive transaxles. It offers superior wear protection, consistent viscosity across temperatures, and enhanced synchro compatibility without corrosive sulfurs. Trusted since 1979, it’s the go-to choice for enthusiasts seeking reliable, high-performance gear lubrication.

## Description

RED LINE MT-90 HIGH-PERFORMANCE GEAR OIL is a fully-synthetic ester-based lubricant designed for use in manual transmissions and front-wheel-drive transaxles. This shear-stable formula resists breakdown for extended periods and offers more consistent viscosity in warm and cold temperatures for less gear noise and improved shifting. This fluid is less slippery for improved synchronizer coefficient of friction and offers stronger film strength for better wear protection. SINCE 1979 In 1979, Red Line Synthetic Oil began creating lubricants for the racing industry. Today, we manufacture more than 100 quality products, including motor oils, gear oils, assembly lubes, fuel additives and our popular WaterWetter cooling additive for the automotive, motorcycle, marine and industrial markets. TECHNOLOGY Using cutting edge technology, Red Line responds to the technical challenges of today's performance industry. We are enthusiasts that stay on top of each market niche, ensuring product recommendations that result in serious performance gains. We use this knowledge of racing to create high-performance products for track cars and street vehicles. Red Line products perform and protect better than any on the market. No compromises.

Review: Great, fast delivery and service. Thanks
Review: If this brand hadn’t been recommended by a very reputable transmission shop I wouldn’t have paid this much for it!

## Features

- HIGH PERFORMANCE - Gear protection and longer synchro life. Recommended for GL-1, GL-3, and GL-4 applications, as well as where most special synchromesh fluids are specified
- OFFERS QUICKER SHIFTS - Excellent gear and synchro protection, balanced friction control & slipperiness for easier shifting even in cold climates
- SAFE FOR BRASS SYNCHROS - GL-4 Gear Oil lacks the reactive sulfurs found in most GL-5 oils that cause damage. Recommended for GL-1, GL-3 & GL-4 applications
- POPULAR MOTOR OIL FOR - Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola transmissions & Atlas transfer cases for Off-Road
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000T9TMX8 |
| Item model number | 50325 |
| Manufacturer | Red Line |
| Product Dimensions | 38.1 x 30.48 x 25.4 cm; 4.54 kg |

## Product Details

- **Brand:** Red Line
- **Item weight:** 10 Pounds
- **Liquid volume:** 512 Fluid Ounces
- **Material:** Synthetic
- **Package information:** Jug

## Images

![Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) - Image 1](https://m.media-amazon.com/images/I/715jWOKbhPL.jpg)
![Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) - Image 2](https://m.media-amazon.com/images/I/81zyln3z-IL.jpg)
![Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) - Image 3](https://m.media-amazon.com/images/I/81eZ7tyT1BL.jpg)
![Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) - Image 4](https://m.media-amazon.com/images/I/81hzhcHUXLL.jpg)
![Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) - Image 5](https://m.media-amazon.com/images/I/81M9Tv+BFuL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***L on 15 March 2022*

Great, fast delivery and service. Thanks

### ⭐⭐⭐ Review
*by O***T on 5 December 2023*

If this brand hadn’t been recommended by a very reputable transmission shop I wouldn’t have paid this much for it!

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**Shop now:** [https://www.desertcart.co.za/products/548593106-red-line-50305-manual-transmission-mt-90w-gear-oil-1](https://www.desertcart.co.za/products/548593106-red-line-50305-manual-transmission-mt-90w-gear-oil-1)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-13*