---
product_id: 24084581
title: "Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon"
brand: "red line"
price: "931.86 DT"
currency: TND
in_stock: true
category: "Red Line"
url: https://www.desertcart.tn/products/24084581-red-line-50505-mt-85-manual-transmission-75w85-gl-4
store_origin: TN
region: Tunisia
---

# 75W85 viscosity for optimal gear protection Smooth shifting even in cold climates Safe for brass synchros, no corrosive sulfurs Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon

**Brand:** red line
**Price:** 931.86 DT
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon by red line
- **How much does it cost?** 931.86 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/24084581-red-line-50505-mt-85-manual-transmission-75w85-gl-4)

## 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 synthetic formula since 1979 outperforms the rest
- • **Brass Synchro Safe:** Formulated without reactive sulfurs to protect sensitive components
- • **Cold-Climate Ready:** Maintains slipperiness for seamless shifting in low temperatures
- • **Precision Gear Defense:** Extends synchro life with high-performance GL-4 formula
- • **Effortless Shifts, Always:** Balanced friction control ensures quicker, smoother gear changes

## Overview

Red Line 50505 MT-85 is a premium synthetic 75W85 GL-4 gear oil designed for manual transmissions, offering superior gear and synchro protection, especially for brass synchros. It ensures quicker, smoother shifts even in cold climates and is trusted by enthusiasts for Nissan, Mitsubishi, Hyundai, Kia, and Quaife synchro applications. Established since 1979, Red Line delivers uncompromising performance and longevity.

## Description

Buy Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon: Motor Oils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## 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 GEA OIL FOR - Nissan 350Z and 370Z (also most Maxima, Altima & Sentra), Mitsubishi Evolution, Hyundai, Kia and Quaife synchro manual trans applications
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B019XB6FQO |
| Best Sellers Rank | #23,332 in Automotive ( See Top 100 in Automotive ) #83 in Gear Oils |
| Brand Name | Red Line |
| Container Type | Can |
| Customer Reviews | 4.8 4.8 out of 5 stars (904) |
| Global Trade Identification Number | 00083522505055 |
| Included Components | MT-85 75W85 GL-4 - 1 gallon |
| Item Form | Oil |
| Item Type Name | MT-85 75W85 GL-4 - 1 gallon |
| Item Weight | 7 pounds |
| Liquid Volume | 128 fluid ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Model Number | 50505 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Interchange Info | 50505 |
| Part Number | 50505 |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Manual transmission lubrication, specific vehicle models and transmissions |
| UPC | 083522505055 |
| Unit Count | 128 Fluid Ounces |
| Viscosity | 75W-85 |

## Product Details

- **Brand:** Red Line
- **Item Weight:** 7 pounds
- **Liquid Volume:** 128 fluid ounces
- **Material:** Synthetic
- **Package Information:** Can

## Images

![Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon - Image 1](https://m.media-amazon.com/images/I/418F6CkZ3KL.jpg)
![Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon - Image 2](https://m.media-amazon.com/images/I/51HBKm17d9L.jpg)
![Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon - Image 3](https://m.media-amazon.com/images/I/512ViBe7LBL.jpg)
![Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon - Image 4](https://m.media-amazon.com/images/I/51+d-ugfJvL.jpg)
![Red Line 50505 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Gallon - Image 5](https://m.media-amazon.com/images/I/51XVepoDWcL.jpg)

## Available Options

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

## Questions & Answers

**Q: Help. I have 09 Tacoma 5 speed manual will this item work or any other recommendation?**
A: If owners manual calls for a GL-4 oil then yes this is will be fine. Dont use GL-5 in a transmission that calls for GL-4. Sulpher in the oil will destroy the brass synchros and brass washers and parts. Redline is great but its not a miracle oil.

**Q: work on 370z ?**
A: MT-85 is specifically designed for the 370z. Take a look here: http://www.the370z.com/diy-section-do-yourself/8311-diy-transmission-oil-change.html

**Q: Will this be compatible with my 2014 F34 335i rear non-limited slip differential?**
A: This is not the correct fluid. You need 75w90 and this is 75w85. it's close but not the same. I would recommend the BMW Specific fluid for your car that is the correct spec.

**Q: Can it use with Vespa Paige 50cc?**
A: I purchased this oil for an older Hyundai with a manual transmission. I believe it is a formula specifically for Korean cars, and it worked remarkably well. With that said, I don't see where Vespa calls for this viscosity. Personally, I would stick with what they recommend.

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**Shop now:** [https://www.desertcart.tn/products/24084581-red-line-50505-mt-85-manual-transmission-75w85-gl-4](https://www.desertcart.tn/products/24084581-red-line-50505-mt-85-manual-transmission-75w85-gl-4)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-19*