---
product_id: 11101828
title: "Bardahl 3119 Gear Oil Additive + StopLeak - Extreme Pressure Lubricant Extends Gear Life and Stops Leaks by Conditioning Seals - 8 oz. (Pack of 1)"
brand: "bardahl"
price: "$49.44"
currency: USD
in_stock: true
reviews_count: 8
category: "Bardahl"
url: https://www.desertcart.us/products/11101828-bardahl-3119-gear-oil-additive-stopleak-extreme-pressure-lubricant-extends
store_origin: US
region: United States of America
---

# Extends gear oil life by reducing wear Reduces gear noise and wear Conditions seals to stop leaks Bardahl 3119 Gear Oil Additive + StopLeak - Extreme Pressure Lubricant Extends Gear Life and Stops Leaks by Conditioning Seals - 8 oz. (Pack of 1)

**Brand:** bardahl
**Price:** $49.44
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your gears tight and your ride smooth — don’t let leaks steal your drive!

## Quick Answers

- **What is this?** Bardahl 3119 Gear Oil Additive + StopLeak - Extreme Pressure Lubricant Extends Gear Life and Stops Leaks by Conditioning Seals - 8 oz. (Pack of 1) by bardahl
- **How much does it cost?** $49.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/11101828-bardahl-3119-gear-oil-additive-stopleak-extreme-pressure-lubricant-extends)

## Best For

- bardahl enthusiasts

## Why This Product

- Trusted bardahl brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Whisper-Quiet Shifts:** Reduces gear noise and wear for smoother, quieter rides
- • **Seal the Deal on Leaks:** Conditions and rejuvenates seals to eliminate costly leaks
- • **Effortless Manual Shifting:** Improves synchronizer performance to ease gear changes
- • **Prolong Your Gearbox's Lifespan:** Extends gear oil life with advanced Polar Attraction Formula
- • **Universal Fit for All Your Rides:** Compatible with all manual transmissions and differentials using standard gear or motor oils

## Overview

Bardahl 3119 Gear Oil Additive + StopLeak is an 8 oz universal formula designed to extend gear oil life, condition seals to stop leaks, reduce gear wear and noise, and improve manual transmission shifting. Its Polar Attraction Formula creates a protective film that enhances gear performance and longevity, making it an essential maintenance upgrade for cars and trucks.

## Description

Bardahl Gear Oil Additive plus Stop Leak is a specially formulated additive for manual transmission, gearboxes and differentials. It extends the life of gear oil. It also fortifies OEM additives with Bardahl’s Polar Attraction Formula, providing a protective film that reduces wear. Gear Oil Additive plus Stop Leak also has a seal conditioner to prevent and eliminate leaks.

Review: It worked for me - I bought a used 2007 Chrysler Pacifica that ended up having a read differential leak which turns out not to be serviceable. (You need another diff). As a last resort I bought the differential conditioner / sealer and to my surprise the leak stopped . Have since put 1500 miles on the car and still clean and dry. As a last resort I would definitely recommend.
Review: Good product - Good product, everything is fine

## Features

- Extends gear oil life
- Conditions seals and eliminates leaks
- Protects against gear wear and reduces gear noise
- Improves synchronizer performance to decrease shift effort in manual transmissions
- Suitable for use in use in all types of manual transmission and differentials that specify standard automotive gear oils or motor oil as the lubricant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002QET15S |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #286,601 in Automotive ( See Top 100 in Automotive ) #233 in Gear Oils |
| Brand | Bardahl |
| Brand Name | Bardahl |
| Compatible with Vehicle Type | Car, Truck |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 116 Reviews |
| Global Trade Identification Number | 00076906031196 |
| Included Components | Gear Oil Additive + StopLeak |
| Liquid Volume | 8 Fluid Ounces |
| Manufacturer | Bardahl |
| Manufacturer Part Number | 3119 |
| Manufacturer Warranty Description | Manufacturer |
| Package Information | Bottle |
| UPC | 076906031196 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car, Truck |

## Product Details

- **Brand:** Bardahl
- **Liquid Volume:** 8 Fluid Ounces
- **Package Information:** Bottle
- **UPC:** 076906031196
- **Vehicle Service Type:** Car, Truck

## Images

![Bardahl 3119 Gear Oil Additive + StopLeak - Extreme Pressure Lubricant Extends Gear Life and Stops Leaks by Conditioning Seals - 8 oz. (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/51BQoM8fnXL.jpg)
![Bardahl 3119 Gear Oil Additive + StopLeak - Extreme Pressure Lubricant Extends Gear Life and Stops Leaks by Conditioning Seals - 8 oz. (Pack of 1) - Image 2](https://m.media-amazon.com/images/I/71keq3UWI9L.jpg)
![Bardahl 3119 Gear Oil Additive + StopLeak - Extreme Pressure Lubricant Extends Gear Life and Stops Leaks by Conditioning Seals - 8 oz. (Pack of 1) - Image 3](https://m.media-amazon.com/images/I/61pYiTplYwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It worked for me
*by D***S on April 7, 2025*

I bought a used 2007 Chrysler Pacifica that ended up having a read differential leak which turns out not to be serviceable. (You need another diff). As a last resort I bought the differential conditioner / sealer and to my surprise the leak stopped . Have since put 1500 miles on the car and still clean and dry. As a last resort I would definitely recommend.

### ⭐⭐⭐⭐⭐ Good product
*by V***9 on November 24, 2025*

Good product, everything is fine

### ⭐⭐⭐⭐⭐ Seal conditioner
*by K***N on December 13, 2025*

As described sure hoping it stops or slows down yoke and axle seal seepage.

## Frequently Bought Together

- Bardahl 3119 Gear Oil Additive + StopLeak - Extreme Pressure Lubricant Extends Gear Life and Stops Leaks by Conditioning Seals - 8 oz. (Pack of 1)
- Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart
- Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-14*