---
product_id: 257386190
title: "Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart"
brand: "red line"
price: "₩138851"
currency: KRW
in_stock: true
reviews_count: 5
category: "Red Line"
url: https://www.desertcart.kr/products/257386190-red-line-50104-75w85-gl-5-full-synthetic-gear-oil
store_origin: KR
region: South Korea
---

# Longer drain intervals & superior shear stability Full synthetic polyol ester base for extreme pressure 75W85 SAE viscosity grade Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil For Hypoid Limited Slip Differentials - 1 Quart

**Brand:** red line
**Price:** ₩138851
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift into the fast lane with frictionless confidence!

## 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?** ₩138851 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/257386190-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

- • **Wide Compatibility:** Meets or exceeds API GL-5 specs and fits a broad range of vehicles from BMW to Toyota, making it the go-to gear oil for discerning drivers.
- • **Extended Service Life:** Superior oxidation resistance and shear stability mean fewer oil changes and longer-lasting drivetrain health.
- • **Race-Proven Reliability:** Trusted by Formula racing transaxles and late-model luxury SUVs for unmatched protection under extreme conditions.
- • **Built-In Friction Modifiers:** Engineered for clutch-type limited slip differentials—no extra additives needed, ensuring seamless LSD operation.
- • **Precision Viscosity Control:** Maintains optimal gear film thickness across temperature swings for smooth, reliable performance.

## Overview

Red Line 50104 is a premium 75W85 full synthetic gear oil formulated with polyol ester base stocks and friction modifiers for optimal performance in hypoid limited slip differentials. It delivers superior shear stability, oxidation resistance, and consistent viscosity across temperature extremes, making it ideal for high-performance and luxury vehicles. Compatible with many late-model cars and racing transaxles, it ensures longer drain intervals, reduced wear, and smooth LSD operation without additional additives.

## 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: 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: Meiner Meinung nach das Beste Getriebe öl sehe hohe Laufruhe keine Geräusche und optimale Schmierung. optimal für Toyota Geländewagen 4 Runner und Land Cruiser

## Features

- SATISFIES REQUIREMENTS - for gear oil viscosity of SAE 75W80, 75W, 80W and 85W, as well as SAE 30 and SAE 10W30 motor oil
- APPLICATIONS - include differential oil, final drive oil, gear oil and transfer case fluid, this product is not designed for use in most manual transmissions or transaxles with synchronizers, as extreme slipperiness may cause shifting problems
- CONTAINS - additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required, known formerly as LightWeight Gear Oil
- POPULAR GEAR OIL FOR - in many late model BMW, Dodge, Ford, GM, Jeep, Lexus, Mercedes-Benz, Ram, Toyota, also popular in many Formula racing transaxles, including Hewland LD-200 and FTR sequential
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000J3G8KE |
| Best Sellers Rank | #25,172 in Automotive ( See Top 100 in Automotive ) #379 in Automotive Oils |
| Brand | Red Line |
| Customer Reviews | 4.9 4.9 out of 5 stars (827) |
| Date First Available | 2 December 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:** 2 Pounds
- **Liquid volume:** 32 Fluid Ounces
- **Material:** Synthetic
- **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

### ⭐⭐⭐⭐⭐ Review
*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 👌🏻😎🤪

### ⭐⭐⭐⭐⭐ Review
*by A***E on 24 November 2025*

Meiner Meinung nach das Beste Getriebe öl sehe hohe Laufruhe keine Geräusche und optimale Schmierung. optimal für Toyota Geländewagen 4 Runner und Land Cruiser

### ⭐⭐⭐⭐⭐ Review
*by E***L on 28 January 2026*

Good

## 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 South Korea*
*Store origin: KR*
*Last updated: 2026-02-07*