---
product_id: 548593106
title: "50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4)"
brand: "red line"
price: "7964 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/548593106-50305-manual-transmission-mt-90w-gear-oil-1-gallon-pack
store_origin: RO
region: Romania
---

# 90W viscosity for optimal gear protection Stable performance in cold climates Safe for brass synchros, no corrosive sulfurs 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4)

**Brand:** red line
**Price:** 7964 Lei
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift into the fast lane with gear oil that never quits!

## Quick Answers

- **What is this?** 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) by red line
- **How much does it cost?** 7964 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/548593106-50305-manual-transmission-mt-90w-gear-oil-1-gallon-pack)

## 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

- • **Synchro-Safe Formula:** GL-4 rating means zero damage to delicate brass synchros—drive with confidence
- • **Trusted by Iconic Brands:** Preferred by Nissan, VW/Audi, Toyota, and Lotus for superior transmission care
- • **Effortless Shifting, Always:** Balanced friction control ensures quicker, smoother gear changes even in cold weather
- • **Race-Proven Gear Protection:** Extend synchro life with high-performance synthetic ester base
- • **Legacy of Excellence Since 1979:** Red Line’s racing heritage guarantees uncompromising quality and performance

## Overview

Red Line 50305 MT-90 is a fully synthetic, ester-based 90W gear oil designed for manual transmissions and front-wheel-drive transaxles. It offers superior wear protection, stable viscosity across temperatures, and a friction profile optimized for smoother shifting and longer synchro life. Safe for brass synchros and recommended for GL-1, GL-3, and GL-4 applications, it’s trusted by leading automotive brands and backed by over four decades of racing expertise.

## 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.

## 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 |
| Best Sellers Rank | #1,135,819 in Automotive ( See Top 100 in Automotive ) #497 in Gear Oils |
| Brand | Red Line |
| Customer Reviews | 4.5 4.5 out of 5 stars (8) |
| Date First Available | July 6, 2007 |
| Global Trade Identification Number | 00083522503259 |
| Is Discontinued By Manufacturer | No |
| Item Form | Fluids,Liquid,Oil |
| Item Weight | 10 pounds |
| Item model number | 50325 |
| Liquid Volume | 512 Fluid Ounces |
| Manufacturer | Red Line |
| Manufacturer Part Number | 50325 |
| Material | Synthetic |
| Number of Items | 4 |
| Package Information | Pail |
| Product Dimensions | 15 x 12 x 10 inches |
| Recommended Uses For Product | Lubricant |
| SAE J300 Viscosity Grade | 75W-90 |
| Specific Uses For Product | Manual transmissions and transaxles, specific vehicle models (Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola), off-road applications |
| UPC | 083522503259 |
| Unit Count | 512.0 Fluid Ounces |
| Upper Temperature Rating | 300 Degrees Fahrenheit |
| Viscosity | 75W90 |

## Product Details

- **Material:** Synthetic
- **Brand:** Red Line
- **Package information:** Jug
- **Liquid volume:** 512 Fluid Ounces
- **Item weight:** 4.54 kg

## Images

![50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4) - Image 1](https://m.media-amazon.com/images/I/715jWOKbhPL.jpg)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-20*