---
product_id: 6635153
title: "50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart"
brand: "red line"
price: "₱6338"
currency: PHP
in_stock: true
reviews_count: 13
category: "Red Line"
url: https://www.desertcart.ph/products/6635153-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil
store_origin: PH
region: Philippines
---

# Extends synchro & gear life GL-4 spec for safe brass synchros Smooth shifting even in cold climates 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart

**Brand:** red line
**Price:** ₱6338
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift smoother, last longer — the gear oil pros trust!

## Quick Answers

- **What is this?** 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart by red line
- **How much does it cost?** ₱6338 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/6635153-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil)

## 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

- • **Legacy of Excellence:** Red Line’s proven performance since 1979 guarantees uncompromising quality and reliability.
- • **Synchro-Safe Formula:** GL-4 rating means no reactive sulfurs—perfect for brass synchros and sensitive transmissions.
- • **Trusted Compatibility:** Ideal for Nissan 350Z/370Z, Mitsubishi Evo, Hyundai, Kia, and Quaife manual gearboxes.
- • **Cold-Climate Performance:** Balanced friction control ensures effortless shifts even in freezing temperatures.
- • **Precision Gear Protection:** Formulated to extend synchro and gear lifespan, reducing costly wear.

## Overview

Red Line 50504 MT-85 75W85 GL-4 Gear Oil is a premium manual transmission fluid designed for superior gear and synchro protection. Its unique formula ensures quicker, smoother shifts even in cold weather, while being safe for brass synchros. Compatible with a wide range of performance and everyday manual transmissions, this 1-quart synthetic blend oil delivers proven durability and reliability trusted by enthusiasts and professionals since 1979.

## Description

Buy Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart: Motor Oils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Solid MTF - Pretty smooth shifting
Review: Good Stuff! - Used a little over 2 quarts swapping out from a small 5-speed transmission. Works great and just clicks into gear.

## 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 | B004D4URV6 |
| Best Sellers Rank | #17,175 in Automotive ( See Top 100 in Automotive ) #254 in Motor Oils |
| Brand | Red Line |
| Date First Available | November 19, 2010 |
| Global Trade Identification Number | 00083522505048 |
| Is Discontinued By Manufacturer | No |
| Item Form | Fluids,Oil |
| Item Weight | 1.95 pounds |
| Item model number | RED50504 |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Red Line |
| Material | Mineral Oil, Synthetic Oil |
| Number of Items | 1 |
| Package Information | Bottle |
| Product Dimensions | 13 x 6 x 6 inches |
| Recommended Uses For Product | Vehicle |
| UPC | 083522505048 |
| Unit Count | 32.0 Fluid Ounces |
| Viscosity | 5w-30 |

## Product Details

- **Brand:** Red Line
- **Item Weight:** 1.95 Pounds
- **Liquid Volume:** 32 Fluid Ounces
- **Material:** Mineral Oil, Synthetic Oil
- **Package Information:** Bottle

## Images

![50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart - Image 1](https://m.media-amazon.com/images/I/71eCG2BDySL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid MTF
*by D***W on December 9, 2025*

Pretty smooth shifting

### ⭐⭐⭐⭐⭐ Good Stuff!
*by B***G on January 21, 2026*

Used a little over 2 quarts swapping out from a small 5-speed transmission. Works great and just clicks into gear.

### ⭐⭐⭐⭐⭐ Smooth shifts and good quality.
*by Z***S on October 11, 2025*

2017 Cruze diesel 6 speed manual. Feels great much better than the oem fluid after 65k miles. Smooth shifts no resistance even when it was 30degrees.

## Frequently Bought Together

- Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart
- Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 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)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ph/products/6635153-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil](https://www.desertcart.ph/products/6635153-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil)

---

*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-03-06*