---
product_id: 21859934
title: "50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack)"
brand: "red line"
price: "¥42366"
currency: JPY
in_stock: true
category: "Red Line"
url: https://www.desertcart.jp/products/21859934-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil
store_origin: JP
region: Japan
---

# Faster, smoother shifts even in cold climates 75W85 viscosity for optimal gear protection Safe for brass synchros, no corrosive sulfurs 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack)

**Brand:** red line
**Price:** ¥42366
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift smarter, protect stronger—drive the Red Line advantage!

## Quick Answers

- **What is this?** 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack) by red line
- **How much does it cost?** ¥42366 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/21859934-50504-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

- • **Brass Synchro Safe:** Formulated without reactive sulfurs to protect sensitive components
- • **Wide Compatibility:** Trusted by Nissan 350Z/370Z, Mitsubishi Evo, Hyundai, Kia & more
- • **Effortless Shifting:** Balanced friction control ensures quicker, smoother gear changes
- • **Legacy of Excellence:** Red Line’s proven performance since 1979—no compromises
- • **Precision Gear Protection:** Extends synchro life with advanced GL-4 synthetic formula

## Overview

Red Line 50504 MT-85 is a premium synthetic 75W85 GL-4 gear oil designed for manual transmissions. It delivers superior gear and synchro protection, enabling quicker shifts and longer component life. Safe for brass synchros and compatible with a wide range of vehicles including Nissan 350Z/370Z, Mitsubishi Evolution, Hyundai, Kia, and more, this 4-quart pack is the trusted choice for enthusiasts and professionals seeking uncompromised transmission performance.

## Description

Buy Red Line 50504 MT-85 Manual Transmission 75W85 GL-4 Gear Oil - 1 Quart (4 Pack): Gear 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 - Compatible with 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 | B00NQBFHVW |
| Best Sellers Rank | #40,588 in Automotive ( See Top 100 in Automotive ) #77 in Gear Oils |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (198) |
| Item Form | Oil |
| Item Weight | 8 pounds |
| Liquid Volume | 128 fluid ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Model Number | 50504 |
| Number of Items | 4 |
| Number of Packs | 4 |
| Part Number | 50504 |
| Recommended Uses For Product | Vehicle,Truck |
| Specific Uses For Product | Compatible with Nissan 350Z and 370Z, Mitsubishi Evolution, Hyundai, Kia, Quaife synchro manual trans applications, NV4500 truck transmission applications like Chevy Silverado and Dodge Ram |
| UPC | 737534816486 672713967460 |
| Unit Count | 128 Fluid Ounces |
| Viscosity | 75W85 |

## Product Details

- **Brand:** Red Line
- **Item Weight:** 8 pounds
- **Liquid Volume:** 128 fluid ounces
- **Material:** Synthetic
- **Package Information:** Bottle

## Images

![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)

## Frequently Bought Together

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

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**Shop now:** [https://www.desertcart.jp/products/21859934-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil](https://www.desertcart.jp/products/21859934-50504-mt-85-manual-transmission-75w85-gl-4-gear-oil)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-18*