---
product_id: 256334787
title: "Red Line 80301 Limited Slip Friction Modifier - 4 oz."
brand: "red line"
price: "$U3717"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/256334787-red-line-80301-limited-slip-friction-modifier-4-oz
store_origin: UY
region: Uruguay
---

# Boosts differential efficiency for better mileage High viscosity-index for stable performance Superior wear protection & longer drain intervals Red Line 80301 Limited Slip Friction Modifier - 4 oz.

**Brand:** red line
**Price:** $U3717
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your ride’s efficiency—because your differential deserves the best.

## Quick Answers

- **What is this?** Red Line 80301 Limited Slip Friction Modifier - 4 oz. by red line
- **How much does it cost?** $U3717 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/256334787-red-line-80301-limited-slip-friction-modifier-4-oz)

## 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

- • **Universal Compatibility:** Works flawlessly with both petroleum and synthetic gear oils—no compromises on your drivetrain.
- • **Smooth, Chatter-Free Ride:** Add 1oz increments to eliminate annoying limited-slip chatter and enjoy seamless traction control.
- • **Trusted Legacy Since 1979:** Join the elite drivers who rely on Red Line’s proven performance and protection for over four decades.
- • **Precision Engineered Protection:** Maximize your differential’s lifespan with advanced friction modifiers designed to reduce wear and tear.
- • **Consistent Performance Across Temperatures:** High viscosity-index formula maintains optimal film thickness, exceeding API GL-5 standards.

## Overview

Red Line 80301 Limited Slip Friction Modifier is a high-viscosity additive engineered to enhance differential efficiency, reduce wear, and eliminate limited-slip chatter. Compatible with petroleum and synthetic gear oils, it exceeds API GL-5 specifications and supports longer drain intervals, ensuring superior drivetrain protection and improved mileage.

## Description

Red Line 80301 Limited Slip Friction Modifier - 4 oz.

## Features

- ENGINEERED - to provide the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear
- DIRECTION - Add 1oz at a time to clutch-type limited slip or posi-traction units to eliminate chatter
- HIGH VISCOSITY-INDEX - to provide relatively constant viscosity and film thickness with varying temperature change, exceed API GL-5 specifications
- COMPATIBLE WITH - both petroleum and synthetic gear oils
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Red Line |
| Brand | Red Line |
| Model | Redline |
| Product Dimensions | 5.97 x 5.72 x 11.94 cm; 110 g |
| Item model number | 80301 |
| Manufacturer Part Number | 80301 |
| OEM Part Number | 80301 |
| Item Weight | 110 g |
| Viscosity | High |

## Product Details

- **Material:** Synthetic
- **Brand:** Red Line
- **Package information:** Bottle
- **Liquid volume:** 4 Fluid Ounces
- **Recommended uses for product:** Automotive

## Images

![Red Line 80301 Limited Slip Friction Modifier - 4 oz. - Image 1](https://m.media-amazon.com/images/I/71auZeP6jKL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Would the 95 Isuzu 4x4 front differential benefit from this additive? I know the rear limited slip diff does!**
A: No, unless it's a limited slip after market and specifies such. On the rear positive,  too much would cause slippage between the plates.  Just ad enough to stop the clanging.  Too much would lesson the Limited slip .

**Q: Can this be used in redlline dct fluid that is used in a manual tranmission with lsd?**
A: It was purchased for my son.  I didn't use it.  My son is a car mechanic, so I think it is a good product.

**Q: Would this help a 95 Isuzu front 4x4 differential? ...that chatters around corners on pavement?**
A: Check your u-joints but if there ok. Let me know if it worked. Differential Gear oil is supposed to be replaced on a regular Preventative maintenance Schedule. I don’t know what the mileage is on your car is but it couldn’t hurt “unless your vehicle is not a LSD Diff.” Thanks!

**Q: do I need that for my 99 chevy express 1500 V8  with amsoil 80W90 together?**
A: My chevy Silverado 2500HD ran better after adding a 4oz. can of Redline with the rear gear oil. There is also an additive for the transfer case GM put in during a service. I would double check before putting that in the transfer case. Keep on reading, you'll find the answer. Good Luck

## Frequently Bought Together

- Red Line 80301 Limited Slip Friction Modifier - 4 oz.
- Sealey AK54 550ml Oil Suction Syringe, Multicoloured

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-26*