---
product_id: 111251119
title: "Red Line (50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart"
brand: "red line"
price: "€ 54.39"
currency: EUR
in_stock: false
reviews_count: 9
url: https://www.desertcart.fr/products/111251119-red-line-50104-75w85-gl-5-full-synthetic-gear-oil
store_origin: FR
region: France
---

# High Viscosity Index 163 for stable performance 75W85 SAE Viscosity Grade Friction modifiers for limited slip differentials Red Line (50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart

**Brand:** red line
**Price:** € 54.39
**Availability:** ❌ Out of Stock

## Summary

> ⚙️ Shift into the future with frictionless precision!

## Quick Answers

- **What is this?** Red Line (50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart by red line
- **How much does it cost?** € 54.39 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/111251119-red-line-50104-75w85-gl-5-full-synthetic-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

- • **Ultimate Gear Protection:** Full synthetic polyol ester base ensures extreme pressure resistance and superior shear stability for your differential.
- • **Trusted by Performance Enthusiasts:** Popular choice for late-model BMW, Ford Focus RS, Jeep, Mercedes-Benz, and even Formula racing transaxles.
- • **Extended Drain Intervals & Efficiency:** Reduces wear and oxidation, improving mileage and extending service life for your vehicle’s drivetrain.
- • **Optimized for Limited Slip Differentials:** Built-in friction modifiers eliminate the need for extra additives, delivering smooth clutch-type LSD operation.
- • **Consistent Performance Across Temperatures:** High viscosity index (163) maintains stable film thickness from cold starts to high-heat racing conditions.

## Overview

Red Line 75W85 GL-5 Full Synthetic Gear Oil is engineered with advanced polyol ester base stocks and friction modifiers to provide superior protection and efficiency for hypoid limited slip differentials. It offers exceptional shear stability, oxidation resistance, and a high viscosity index of 163, ensuring consistent lubrication under extreme temperature variations. Compatible with many late-model vehicles and racing applications, this gear oil enhances differential performance, extends drain intervals, and eliminates the need for additional friction modifiers in most LSDs.

## Description

These products contain the extreme pressure additives necessary for ultimate protection road cars and racing vehicles, as well as friction modifiers for proper limited-slip operation. Fully-synthetic formulas created from polyol ester base stocks, offer excellent lubrication under extreme conditionsHigh viscosity-index (VI) to provide relatively constant viscosity and film thickness with varying temperature change. Ester base stocks and friction modifiers provide additional slipperiness to lower operating temperatures by reducing the sliding friction in hypoid gearsDetails: Superior shear stability and reduced oxidation compared to other synthetics and conventional gear oils Exceed API GL-5 specifications Engineered to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear Popular in many late models: BMW, Dodge, Ford Focus RS, Jeep, Mercedes-Benz differential, Toyota light truck, Lexus differential and transfer case Contains additional friction modifiers for suitability with clutch type limited slip differentials for most LSDs, no additional friction modifiers are required This product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems Known formerly as Light Weight Gear Oil Also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential Satisfies the gear oil viscosity requirements of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil Recommended for API GL-5, GL-6, MT-1, MIL-L2105E and SAE J2360API Service Class GL 5 Plus SAE Viscosity Grade (Gear Oil) 75W85Vis at 100 degrees C, CSt 11.5 Vis at 40 degrees C, CSt 68Viscosity Index 163 Pour Point, degrees C neg 45Pour Point, degrees F neg 49 Brookfield Viscosity, Poise 300 at neg 40 degrees C

Review: Rear diff oil - I chose red line as it has the friction modifier already added which was perfect for my Mk3 focus rs. Great product Great delivery time. Very Happy 👌🏻😎🤪
Review: Good staff - Really good alternative for bmw oil

## Features

- Harmful to aquatic life with long lasting effects.
- Compatible with/in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota
- Applications include differential oil, final drive oil, gear oil and transfer case fluid
- Contains additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required
- This product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- Known formerly as LightWeight Gear Oil
- 1 Quart, 1 Bottle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000J3G8KE |
| Best Sellers Rank | 210,202 in Automotive ( See Top 100 in Automotive ) 337 in Gear Oils |
| Brand | Red Line |
| Customer Reviews | 4.8 4.8 out of 5 stars (862) |
| Date First Available | 13 Nov. 2012 |
| Item Weight | 907 g |
| Item model number | RED50104 |
| Manufacturer | Red Line |
| Manufacturer part number | 50104 |
| Model | 50104 |
| OEM Part Number | 50104 |
| Product Dimensions | 10.16 x 10.16 x 10.16 cm; 907.18 g |
| Viscosity | Lightweight |

## Product Details

- **Brand:** Red Line
- **Item weight:** 907 g
- **Liquid volume:** 32 Fluid Ounces
- **Material:** Ceramic
- **Package information:** Bottle

## Images

![Red Line (50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart - Image 1](https://m.media-amazon.com/images/I/71XbhvbssUL.jpg)

## Questions & Answers

**Q: Will it work for a 2007 Tundra 2wd rear dif?**
A: I tried this is my 2007 Tacoma Prerunner with the mechanical limited slip diff and the clutches just wouldn't properly slip no matter how much friction modifier I added.

I ended up throwing out some good money worth of oil and put cheap Castrol LSD gear oil in it and it worked fine.

I don't think this is a bad product, Toyota differentials just do not like synthetic oil in some cases.

**Q: Will this work for toyota rav4 awd 2016?**
A: Refer to your owners manual. IF the application (transmission/transfer case) states lubricant per GL5 then yes, it will work great. If GL4 then look at Red Line ATF. NOTE: API GL classifications do not go up and down like motor oils (API SN may be used in SL spec engine). GL5 is totally different from GL4 and will damage synchronizer surfaces and or limited slip clutches if not applied correctly.

**Q: Will this viscosity provide adequate protection for a 1971 C10 daily driver?**
A: I noticed a difference when I changed mine out to this. I just used their mt90 for my manual transmission and it made a huge difference

**Q: Lexus gs 350awd says 1.4qt 75w85 for rear and .7qt 80w90 for front diff. can i use this for both? have a bit of 80w90, can just buy 2 bottles.**
A: I would recommend staying with the fluid recommended by Lexus.  If it were me, I would buy one of each fluid required.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Rear diff oil
*by J***N on 10 October 2022*

I chose red line as it has the friction modifier already added which was perfect for my Mk3 focus rs. Great product Great delivery time. Very Happy 👌🏻😎🤪

### ⭐⭐⭐⭐⭐ Good staff
*by G***G on 7 November 2022*

Really good alternative for bmw oil

### ⭐⭐⭐⭐⭐ Good quality
*by A***R on 17 May 2020*

Good quality product, fast and efficient service.

## Frequently Bought Together

- Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 1 Quart
- Red Line 50604 MT-LV 70W/75W GL-4 High-Performance Full Synthetic Gear Oil Lubricant for Manual Transmissions & Transaxles - 1 Quart
- 12157-10010 90430-24003 90430-18008 Differential and Transmission/Transfer Case Drain Plug Crush Washers Gaskets Compatible with Toyota 4runner Tacoma Tundra FJ cruiser Land Cruiser

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-23*