---
product_id: 626072467
title: "Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack)"
brand: "red line"
price: "2514 kr"
currency: DKK
in_stock: true
reviews_count: 6
url: https://www.desertcart.dk/products/626072467-red-line-50504-mt-85-manual-transmission-75w85-gl-4
store_origin: DK
region: Denmark
---

# Brass Safe High Performance Cold Climate Shifting Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack)

**Brand:** red line
**Price:** 2514 kr
**Availability:** ✅ In Stock

## Summary

> 🔝 Elevate Your Drive with Red Line Gear Oil!

## Quick Answers

- **What is this?** Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack) by red line
- **How much does it cost?** 2514 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/626072467-red-line-50504-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

- • **Cold Climate Ready:** Designed for smooth operation even in frigid temperatures.
- • **Effortless Shifting:** Enjoy quicker shifts with balanced friction control.
- • **Brass Synchro Friendly:** Safe for brass components, avoiding harmful sulfurs.
- • **Trusted by Enthusiasts:** A go-to choice for popular models like Nissan 350Z and Mitsubishi Evolution.
- • **Unmatched Gear Protection:** Experience longer synchro life and superior performance.

## Overview

Red Line 50504 MT-85 Manual Transmission Gear Oil is a high-performance 75W85 GL-4 oil designed to provide exceptional gear protection, longer synchro life, and effortless shifting, even in cold climates. Safe for brass synchros, it is the preferred choice for various popular manual transmission applications.

## Description

Full description not available

## 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

## Product Details

- **Material:** Synthetic
- **Brand:** Red Line
- **Package Information:** Bottle
- **Liquid Volume:** 128 Fluid Ounces
- **Viscosity:** 75W85

## Images

![Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack) - Image 1](https://m.media-amazon.com/images/I/71eCG2BDySL.jpg)
![Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack) - Image 2](https://m.media-amazon.com/images/I/81RW3yyJpAL.jpg)
![Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack) - Image 3](https://m.media-amazon.com/images/I/81RV3PCsZtL.jpg)
![Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack) - Image 4](https://m.media-amazon.com/images/I/81owXIUH2ML.jpg)
![Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack) - Image 5](https://m.media-amazon.com/images/I/815gxEfuaCL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great in my MKIV Jetta
*by M***A on August 18, 2018*

This works great in my 2001 Jetta 5spd (MKIV 02J)My transmission has over 200k miles on it. I've changed the fluid at 100k, then at 150k with Pennzoil synchromesh because of a worn 2nd to 3rd gear synchro, and then again at 200k with MT-85MT-85 must be a newer product because I was not aware of this before. I have read many, many posts in the forums about people talking about how the MT-90 is great in the summer but a bit too thick for the winter. Those same people were saying that MTL is great in the winter but too thin for the summer. So I figured that MT-90 was too thick for my transmission for winter use, and that MTL which is like a MT-80 or something would be great for winter but too thin for the summer (like the Pennzoil synchromesh).So far, this MT-85 gear oil works perfect in my transmission in both warm and cooler weather. It feels sooo much better to shift than the Pennzoil synchromesh, which was recommended to me by others. However, that one was not GL-4 certified like my transmission requires. So I switched it out asap to this MT-85. Even though this gear oil is spec'd for Nissans or something, it works perfect with my VW 02J. The smart people in the forums mix 50/50 MTL and MT-90 anyway, which would be closest to the MT-85 as I understand it and as those people speculate. This product effectively eliminates the need to mix and match 2 different gear oils.5000 miles later, this MT-85 gear oil works perfectly in my transmission. If I remember, I will give a 10k, 15k, 20k, and beyond updates on how this gear oil holds up... That is if my car lasts that long! lolNOTE: This review is for my particular transmission which is the VW 02J 5 speed transmission. These are very picky gearboxes with regards to gear oil. This gear oil works great with my gearbox, but your mileage may vary.

### ⭐⭐⭐⭐⭐ awesome improvment
*by B***H on January 29, 2017*

I put this in a 2010 Nissan Altima Coupe - 6 speed manual. I live in Colorado, so you can imagine at times temperatures here are less than tropical. Over time my car really didn't like cold weather, in terms of going into gear, most noticeable when down shifting when it was below 0. At times I would have to fight a bit to get the gear I wanted, as the syncros would dislike the idea of the gear selection I made when it was brutally cold.So I decided to give this a try. I drained the MT-85 in my car - replaced it with this - the entire process took under 20 mins. Very quick, very easy to do. Call it easier than an oil change in most ways. I put in this fluid, after about 5 miles of driving I found myself grinning as my car moved through gears like it never had before. Even brand new my car never shifted as well, as smooth. This fluid honestly made my car - with a lot of miles on it now - drive better than it ever has, including when I drove it off the lot with the dealer plates on it.I can't say enough about how such a simple - easy - low cost - thing improved the drivability of my car. Everyone should put this in their manual gear boxes *get the right weight for your car* - just great. Mad I waited so long to do it.----- ------ ----- for those interest in how to do this on an Altima - it is very easy as I said ------ ------ -----Pull out your air intake - like you would to change your air filter - except remove the whole box, there is one Philips screw holding in the air box with the mass air flow sensor in it - it is located right next to your strut mount on the drivers side. Leave the mass air flow sensor hooked up and everything, you just need to move it out of the way a bit.Look down into your engine bay - about 4 inches to the left of your master cyclender you will see a 10 mm bolt holding down the fill hole for your MT fluid. Remove this 10 mm bolt - then just pull the fill hole cover off. Done with opening it, up top - a few mins.Now jack up the car, leave the tires on - see easier than an oil change - locate the drain plug right below the fill hole. this is a 10 mm Hex bolt. put a pan under it, remove the bolt, let the fluid drain. Put the bolt back in, remove the pan with the old fluid, lower the car. In total this takes just a few mins.Now . . . I just put a plain old funnel in the MT fluid fill hole. there is enough room you don't need to use a tube. Open the first bottle of fluid, put your thumb over the opening so you can put its opening into the funnel without spilling it. Remove your thumb from the bottle and let it go into the funnel, into your car.Open the second bottle - measure out 700 ml - pour that 700 Ml into the empty bottle you just put into your car. Now simply put your thumb over the bottle opening, so you can get it into the funnel without spilling, let it drain into your car.Replace the fill cap and bolt - put your air intake back in place - I changed my air filter while I was int here - and your done. Nothing to it. very easy.

### ⭐⭐⭐⭐⭐ The correct gear oil for my car
*by M***A on May 24, 2024*

This stuff is great. Car shifts so much nicer now!I was stupid and put Great value gear oil that’s made for differentials in my manual transmission. 3years when I drained the fluid it was a glitter bomb. The new oil this oil is great. Oh and I also got installed a magnetic plug this time. Car is 2010 Kia soul 190,000 miles. Transmissions still works no more grinding

## Frequently Bought Together

- Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack)
- Red Line 57904 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart (2 Pack)
- 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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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-09*