---
product_id: 702835063
title: "50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 4 Quarts"
brand: "red line"
price: "958 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Red Line"
url: https://www.desertcart.ro/products/702835063-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid
store_origin: RO
region: Romania
---

# Friction modifiers for limited slip differentials 75W85 GL-5 viscosity for optimal gear protection Excellent low-temp flow for smooth cold starts 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 4 Quarts

**Brand:** red line
**Price:** 958 Lei
**Availability:** ✅ In Stock

## Summary

> ⚙️ Shift into the future with Red Line’s synthetic edge!

## Quick Answers

- **What is this?** 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 4 Quarts by red line
- **How much does it cost?** 958 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/702835063-50104-75w85-gl-5-full-synthetic-gear-oil-for-hypoid)

## 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

- • **Cold-Start Champion:** Superior low-temperature flow ensures effortless shifting and rapid lubrication even in freezing conditions.
- • **Quieter, Smoother Ride:** Reduces differential noise and improves power transfer for a refined driving experience.
- • **Race-Ready Performance:** Optimized for limited slip differentials and popular in high-performance and racing applications.
- • **Extended Drain Intervals:** Stable at elevated temperatures and compatible with seals, allowing longer service intervals without compromise.
- • **Ultimate Gear Protection:** Full synthetic formula delivers highest film strength to reduce wear and extend drivetrain life.

## Overview

Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil is engineered for hypoid limited slip differentials, offering exceptional protection, enhanced shifting, and improved drivetrain efficiency. Trusted by enthusiasts and professionals alike, it combines advanced friction modifiers and synthetic stability to deliver quieter operation, extended drain intervals, and reliable performance across a wide temperature range.

## Description

RED LINE SYNTHETIC GEAR OILS Designed to provide the highest degree of protection and greatest efficiency for your drivetrain. Red Line provides a complete line of drivetrain lubricants which are optimized for differential, transmission, or transaxle use over a wide range of temperatures. Red Line LightWeight Gear Oil - a 75W/80W GL-5 gear oil designed to lubricate transmissions and transaxles which recommend 80W GL-5 gear oils. It has excellent low- temperature flow which allows easier shifting when cold. Also has good synchro compatibility. May be used to obtain maximum power transfer in racing differentials which do not see high temperatures. Provides the greatest gear protection available * Reduces differential and gearbox temperatures * Increases differential and gearbox durability * Rapid lubrication even in very cold weather * Improves shifting in manual transmissions * Provides improved drivetrain efficiency * Prevents foaming even at high speeds * Low corrosiveness reduces synchronizer wear * Stable even at elevated temperatures * Highest film strength available * Can be used in limited-slip and regular differentials * Suitable for competition and street use * Compatible with petroleum and other synthetics * Compatible with seals designed for petroleum * Satisfies requirements calling for API GL-5 and GL-6 * Allows extended drains in non-warranty vehicles

Review: Great price and good quality - Works great Toyota Tacoma 2018
Review: Red Line compared to Original gear oil during Servicing - I changed the rear differential fluid in my 2021 Kia Seltos Turbo at 50 K miles. The original oil was clear. Checked and clean the magnet. Small amount of powered filings on magnet, normal condition. Replaced with Redline75W85 GL-5 Full Synthetic Gear Oil. The original fluid had a fish smell to it, possibly regular gear oil. The Redline nearly no smell and the oil felt more slippery on my hand. After fluid install, I drove the car in traffic and the interstate. I felt like I had a little more power and easier acceleration from a Stop. I can tell the rear end is quieter as well. Next I will replace the transmission fluid. Being a dual clutch the Redline MT fluid will hopefully complement the performance increase. It should increase MPG a little. Very Good lubricant.

## 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 | B01LOJT8UI |
| Best Sellers Rank | #2,024 in Automotive ( See Top 100 in Automotive ) #3 in Gear Oils |
| Brand | Red Line |
| Date First Available | August 3, 2023 |
| Item Weight | 6 pounds |
| Item model number | 50104 |
| Liquid Volume | 4 Quarts |
| Manufacturer | Red Line |
| Number of Items | 4 |
| Package Dimensions | 9.6 x 9.4 x 9.2 inches |
| UPC | 083522501446 |

## Product Details

- **Brand:** Red Line
- **Item Weight:** 6 Pounds
- **Liquid Volume:** 4 Quarts
- **Manufacturer:** Red Line
- **UPC:** 083522501446

## Images

![50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 4 Quarts - Image 1](https://m.media-amazon.com/images/I/71XbhvbssUL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great price and good quality
*by S***S on January 5, 2026*

Works great Toyota Tacoma 2018

### ⭐⭐⭐⭐⭐ Red Line compared to Original gear oil during Servicing
*by R***R on October 27, 2025*

I changed the rear differential fluid in my 2021 Kia Seltos Turbo at 50 K miles. The original oil was clear. Checked and clean the magnet. Small amount of powered filings on magnet, normal condition. Replaced with Redline75W85 GL-5 Full Synthetic Gear Oil. The original fluid had a fish smell to it, possibly regular gear oil. The Redline nearly no smell and the oil felt more slippery on my hand. After fluid install, I drove the car in traffic and the interstate. I felt like I had a little more power and easier acceleration from a Stop. I can tell the rear end is quieter as well. Next I will replace the transmission fluid. Being a dual clutch the Redline MT fluid will hopefully complement the performance increase. It should increase MPG a little. Very Good lubricant.

### ⭐⭐⭐⭐⭐ Great Quality
*by W***E on January 15, 2026*

I purchased this to replace the rear differential fluid on my 2020 explorer and there’s definitely a noticeable difference in the performance. I will be using this again!

## Frequently Bought Together

- Red Line 50104 75W85 GL-5 Full Synthetic Gear Oil for Hypoid Limited Slip Differentials - 4 Quarts
- 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 Romania*
*Store origin: RO*
*Last updated: 2026-01-30*