---
product_id: 724925715
title: "Red Line MT-90 ギアオイル 75W90 GL-4 1 Gallon (128 Ounces) 50305"
brand: "ブランド: red line"
price: "€ 443.60"
currency: EUR
in_stock: true
category: "ブランド: Red Line"
url: https://www.desertcart.gr/products/724925715-red-line-mt-90-ギアオイル-75w90-gl-4-1-gallon
store_origin: GR
region: Greece
---

# High-temp gear noise & wear reduction 75W90 viscosity for optimal gear protection Smooth shifting even in cold temps Red Line MT-90 ギアオイル 75W90 GL-4 1 Gallon (128 Ounces) 50305

**Brand:** ブランド: red line
**Price:** € 443.60
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift like a pro, protect like a legend.

## Quick Answers

- **What is this?** Red Line MT-90 ギアオイル 75W90 GL-4 1 Gallon (128 Ounces) 50305 by ブランド: red line
- **How much does it cost?** € 443.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/724925715-red-line-mt-90-ギアオイル-75w90-gl-4-1-gallon)

## Best For

- ブランド: red line enthusiasts

## Why This Product

- Trusted ブランド: red line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Weather Warrior:** Ensures smooth gear changes from freezing cold to blazing heat
- • **Legacy of Excellence:** Trusted since 1979 for uncompromising transmission care
- • **Pro-Grade Protection:** High-performance synthetic oil guards gears under extreme stress
- • **Synchro-Safe Formula:** Non-corrosive to brass synchronizers for lasting transmission life
- • **Precision Shift Mastery:** Eliminates notch shifts with perfect synchro friction

## Overview

Red Line MT-90 75W90 GL-4 gear oil is a synthetic lubricant engineered for manual transmissions and transaxles, delivering superior gear and synchronizer protection. Its balanced friction formula enables smooth, notch-free shifting even in cold weather, while preventing gear noise and wear at high temperatures. Safe for brass synchronizers and compatible with GL-1, GL-3, and GL-4 applications, this 1-gallon powerhouse is the go-to choice for performance-driven drivers since 1979.

## Description

Red Line MT-90 マニュアルトランスミッション潤滑剤 A 75W90 GL-4 ギアオイル (SAE 10W/15W/40 エンジンオイル粘度) は、マニュアルトランスミッションやトランスアクスル用に設計されています。 Red Line MT-90 マニュアルトランスミッション潤滑剤は、ギアとシンクロナイザーの優れた保護を提供し、バランスの取れた滑り性が完璧な摩擦係数を提供し、シフトを容易にします。 Red Line MTL / MT-90の利点概要 * ノッチシフトを排除* マニュアルトランスミッションとトランスアクスル用に設計 * 完璧なシンクロナイザー摩擦係数 * 高速ダウンシフトを可能にします * 寒い時でも優れたシフトを実現 * 高温でのギアの鳴き声やガタつきを解消 * 高性能ギア保護 * シンクロナイザーに対して非腐食性 * マニュアルトランスミッションを満たします とトランスアクスル requecles モーターオイルまたはGL-1、GL-3、GL-4ギアオイル。

## Features

- 高性能 - ギアの保護とより長いシンクロ寿命。 GL-1、GL-3、GL-4の用途にお勧めです。
- 素早いシフト - 完璧なシンクロナイザー摩擦係数で、寒い時でもノッチのずれを防ぎます。
- 要件 - ギアオイル粘度75W、80W、SAE 40 10W40、15W40モーターオイル。
- 人気のギアオイル - GL-1、GL-3、GL-4アプリケーション、ほとんどの特殊シンクロメッシュ液が指定されている場所。 ほとんどのGL-5オイルに含まれる損傷の原因となる反応性硫黄が不足しているため、真鍮シンクロに安全です。
- レッドラインを選ぶ理由 - 1979年に設立されたRed Line Productsは、市場のどの製品よりも優れた性能と保護性能を発揮します。 妥協なし。

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002INX20C |
| Amazon 売れ筋ランキング | 車＆バイク - 708,114位 ( 車＆バイクの売れ筋ランキングを見る ) ATF・ミッションオイル・ギアオイル - 618位 |
| GTIN (Global Trade Identification Number) | 00083522503051 |
| SAE J300粘度グレード | 75W 90 |
| UPC | 083522503051 |
| おすすめ度 | 4.8 5つ星のうち4.8 (1,587) var |
| パック数 | 1 |
| パッケージ内に含まれる商品の数 | 1 |
| ブランド名 | Red Line |
| メーカー名 | Red Line |
| メーカー型番 | 50305 |
| ユニット数 | 3785.41 ミリリットル |
| 品番・型番 | 50305 |
| 商品の推奨用途 | 潤滑油。 |
| 商品の用途 | マニュアルトランスミッションとトランスアクスル。 |
| 商品の重量 | 2.27 キログラム |
| 容器の種類 | カン |
| 液体の容量 | 128 液量オンス |
| 粘度 | 75W90 sae_grade |
| 素材 | 合成素材 |
| 適合可能な材質 | 真鍮 |

## Product Details

- **パッケージ情報:** カン
- **ブランド:** Red Line
- **商品の重量:** 2.27 キログラム
- **材質:** 合成素材
- **液体容量:** 128 液量オンス

## Images

![Red Line MT-90 ギアオイル 75W90 GL-4 1 Gallon (128 Ounces) 50305 - Image 1](https://m.media-amazon.com/images/I/71oe7Mrgl5L.jpg)

## Questions & Answers

**Q: Can you mix gl-4 gear oil with gl-5 gear oil? what is difference? if do 50/50....will be good together? why or why not?**
A: NO NO NO...  GL-4 is specific for older transmissions that have bronze/brass parts. GL-5 will DESTROY these parts.. believe me I know from experience. My local speed shop mistakenly gave me GL-5 for my 91 YJ with the X-5 trans.  Within ten miles I could smell the problem happening. They honored the mistake and gave me a gallon of correct GL-4 so at 150K my X5 was shifting much better. It's in the shop now at 185K for a trans rebuild (yeah it lasted THAT long) and Troy Transmissions was pleased to hear I wanted Redline. He insists on synthetics for Arizona heat and drivers who get in extreme conditions, look up the "back way to Crown King" for an idea of our kind of fun.  And a heads up for the Y owners... beware the fast lube places.  I went to two different shops and BOTH insisted GL-5 was the correct lube!!!  NOT! Luckily the $450 they wanted just to change fluids scared me off and I did what Jeepers should do... work on your own rig yourself.

**Q: why do many say to not change the old gear oil & that the "gunk" in old gear oil makes transmssion last longer & might have problems with new gear oil**
A: What they are referring to is automatic transmission fluid. Automatic transmissions have a series of "bands" with clutch like materials bonded to the friction side. On a worn out automatic transmission, the friction materials on these bands are already smoothed out and slip. Since automatic transmission are driven by hydraulic pressure, the "gunk" suspended inside old fluid will help with "gripping" action with these band. This redline gear oil is used in Manual transmissions. The old saying would not apply here.

**Q: Is MT 90 good for a 1995 jeep yj manual transmission?**
A: Yes, great product; bought the vehicle used and it was not sure what  type of fluid it had in the transmission. The jeep sounded like a bus and once I added the MT-90; big difference and most importantly much quietly.

**Q: Is this product compatible with my 1975 vw beetle, type 1 which spec's 85w/90 gl-4 gear oil? or do you have a synthetic product that is?**
A: I would look on the Volkswagen site or call a Volkswagen service department you can fool around with weights on engine oil but I wouldn't put the wrong weight in on a transmission

## Frequently Bought Together

- Red Line 50305 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Gallon
- Slippery Pete Fluid Pump for Gallon Bottles and Wide Mouth Quart Bottles (Not for Standard Quart Bottles) - Transfer Gear Oil, Transmission and Differential Fluid, Antifreeze with This 30cc Hand Pump
- Red Line 57905 75W90 GL-5 Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Gallon

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-10-04*