---
product_id: 208335013
title: "Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz"
brand: "bar's leaks"
price: "€ 40.51"
currency: EUR
in_stock: true
reviews_count: 13
category: "Bar's Leaks"
url: https://www.desertcart.hr/products/208335013-bars-leaks-axle-and-differential-gear-repair-16-9-oz
store_origin: HR
region: Croatia
---

# Stops pinion, axle & output shaft leaks Superior anti-wear & anti-corrosion protection 16.9 oz premium liquid volume Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz

**Brand:** bar's leaks
**Price:** € 40.51
**Availability:** ✅ In Stock

## Summary

> 🛠️ Stop leaks, silence noise, and drive with confidence!

## Quick Answers

- **What is this?** Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz by bar's leaks
- **How much does it cost?** € 40.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/208335013-bars-leaks-axle-and-differential-gear-repair-16-9-oz)

## Best For

- bar's leaks enthusiasts

## Why This Product

- Trusted bar's leaks brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Leak-Proof Confidence:** Seals pinion, axle & output shaft leaks fast—keep your ride leak-free and worry-free.
- • **Noise & Wear Reduction:** Dramatically cuts grinding, whining & clunking noises while extending gear life with advanced anti-wear agents.
- • **Seal Conditioner Power:** Revitalizes seals to stop leaks and reduce maintenance downtime—perfect for heavy-duty, marine, agricultural & industrial use.
- • **Made in the USA Quality:** Trusted, high-performance formula crafted domestically for reliability across all manual gearboxes, differentials, and axles.
- • **Universal Gear Oil Compatibility:** Works seamlessly with all synthetic & conventional GL-4, GL-5, MT-1 gear oils including 75W-90 to 85W-140 grades.

## Overview

Bar’s Leaks Axle & Differential Gear Repair is a 16.9 oz treatment additive designed to stop leaks in pinion, axle, and output shaft seals. Compatible with all synthetic and conventional GL-4, GL-5, and MT-1 gear oils, it reduces noise and gear wear while extending system life. Ideal for automotive, heavy-duty, agricultural, marine, and industrial gear oils, this USA-made formula revitalizes seals and protects gears from corrosion and foam, delivering a reliable, maintenance-saving solution.

## Description

Bar’s Leaks Axle & Differential Gear Repair is a treatment additive for use with automotive, heavy duty, agricultural, marine and industrial gear oils. Designed to mix with all synthetic and conventional petroleum GL-4, GL-5, MT-1 gear oil / lube grades including 75W-90, 80W-90, 75W-140, 85W-140 and all others. Extends system life by stopping leaks, reducing noise and improving gear performance. Superior anti-wear, anti-foam and anti-corrosion protection. Works in all manual gearboxes, differentials, open & posi axles and more. Stops pinion, axle, output shaft and other seal leaks. Reduces grinding, whining, clunking and protects gears.

Review: Stopped my leak - Noticed a leak while in arizona, wasn’t expecting much if anything. I am surprised because so many “snake oil” products don’t work. My pinion seal was leaking had about 800 miles to home. Put it in and topped off differential when I filled up with fuel. The next fuel up about 350 miles I checked the diff, no leak, checked to be positive I had fluid in it still and was surprised it was 3/4 full still. Topped it off and went on. Checked the next fill and was still full. I’m happy, but still getting seal replaced. It worked in a pinch!
Review: GREAT PRODUCT! - My girlfriend has an 08 rav4 that had a leaky rear axle seal and viscous coupler. The leaks were both fairly small but within a month the differential would be down to about half full which made me very weary whenever she had to go somewhere. The last thing I would want is to put a rear diff in her car. I typically don't trust these stop leak type of products because in my experience they're usually just snake oil. I read the reviews and figured I had nothing to lose so I tried it out. I must say this stuff is amazing, I added just a little bit over the recommended amount to the rear diff and 2 months later the fluid is still full. I often look under the car to check for drips and there is never a drop. There used to be small drops of gear oil hanging off of the diff about to fall onto the ground but this has completely stopped. You can still see where a very negligible amount of gear oil is leaking down the side of the diff below the seals so I don't think the leaks have stopped 100% but more realistically they've probably stopped about 90-95%. This additive is probably more of a temporary fix because leaking seals usually get worse over time but it's gotten me 2 months without having to pull cv axles and replace the seals so I am very pleased. I cannot speak on the gear repair or ability to stop noisy rear axles that this product claims because I didn't have that issue but it's ability to stop leaks seems to be great. I had very slow leaks and it did well for me but I doubt this stuff would help with more serious leaks. Overall I think this is a great product! Quality: 10/10 Price: 10/10 Leak repair: 9.8/10

## Features

- STOPS PINION, AXLE, OUTPUT SHAFT AND OTHER SEAL LEAKS: This is a treatment additive for use with automotive, heavy duty, agricultural, marine and industrial gear oils.
- ANTI-WEAR AW AGENTS: Superior anti-wear, anti-foam and anti-corrosion protection.
- SEAL CONDITIONER: Extends system life by stopping leaks, reducing noise and improving gear performance.
- PERFORMANCE ADDITIVE BOOSTER: Designed to mix with all synthetic and conventional petroleum GL-4, GL-5, MT-1 gear oil / lube grades including 75W-90, 80W-90, 75W-140, 85W-140 and all others.
- Manufactured in the USA, this product works in all manual gearboxes, differentials, open & posi axles and more. Stops pinion, axle, output shaft and other seal leaks. Reduces grinding, whining, clunking and protects gears.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0869GRFC7 |
| Best Sellers Rank | #8,108 in Automotive ( See Top 100 in Automotive ) #70 in Oil & Fluid Additives |
| Brand | Bar's Leaks |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,087) |
| Date First Available | March 23, 2020 |
| Item Form | Liquid |
| Item Weight | 1.06 pounds |
| Item model number | 1816 |
| Liquid Volume | 16.9 Fluid Ounces |
| Manufacturer | Bar's Leaks |
| Manufacturer Part Number | 1816 |
| Material | Petroleum |
| Model | Differential Gear Repair |
| Number of Items | 1 |
| Package Information | Bottle |
| Product Dimensions | 3.5 x 2 x 8.8 inches |
| Recommended Uses For Product | Fleet and plant maintenance. |
| Specific Uses For Product | Fleet and plant maintenance. |
| UPC | 046087018163 |
| Unit Count | 500 Milliliters |

## Product Details

- **Brand:** Bar's Leaks
- **Item Weight:** 16.9 Ounces
- **Liquid Volume:** 16.9 Fluid Ounces
- **Material:** Petroleum
- **Package Information:** Bottle

## Images

![Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz - Image 1](https://m.media-amazon.com/images/I/61zKD3kNdwL.jpg)

## Available Options

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

## Questions & Answers

**Q: How many do you put in a rear for noisy bearings?**
A: You fill up the rear differential through the upper plug.  When the fluid starts running out of the hole, it is full.  Make sure you are parked on a level spot.  I doubt if it will help for noisy bearings unless you are really dry.

**Q: Can I use it for automatic gears?**
A: Bar’s Leaks Gear Repair is a treatment additive for use with automotive, heavy duty, agricultural, marine and industrial gear oils. Designed to mix with all synthetic and conventional petroleum GL-4, GL-5, MT-1 gear oil / lube grades including 75W-90, 80W-90, 75W-140, 85W-140 and all others. 

We would not recommend for Automatic if you are using in Automatic please use Super Leak Fix - part number 1305. 

If you have any other technical questions, feel free to contact our Technical Service Professionals at 800-345-6572 or if you would prefer you can use the contact us page on our website.

**Q: Can I put this in my f150 differential box it's automatic?**
A: We would like to know more about the vehicle and application it is being use in please contact our Technical Service Professionals at 800-345-6572 or if you would prefer you can use the contact us page on our website. https://barsleaks.com/contact-us/

**Q: I have a very tiny wheel bearing seal leak, would this work for my 2003 Grand Marquis Ls?**
A: I had the same kind of leak in my 2000 Silverado with 240k. I changed the gear oil and added this , So far it has stopped the seal leak.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Stopped my leak
*by C***. on July 18, 2023*

Noticed a leak while in arizona, wasn’t expecting much if anything. I am surprised because so many “snake oil” products don’t work. My pinion seal was leaking had about 800 miles to home. Put it in and topped off differential when I filled up with fuel. The next fuel up about 350 miles I checked the diff, no leak, checked to be positive I had fluid in it still and was surprised it was 3/4 full still. Topped it off and went on. Checked the next fill and was still full. I’m happy, but still getting seal replaced. It worked in a pinch!

### ⭐⭐⭐⭐⭐ GREAT PRODUCT!
*by R***N on January 23, 2024*

My girlfriend has an 08 rav4 that had a leaky rear axle seal and viscous coupler. The leaks were both fairly small but within a month the differential would be down to about half full which made me very weary whenever she had to go somewhere. The last thing I would want is to put a rear diff in her car. I typically don't trust these stop leak type of products because in my experience they're usually just snake oil. I read the reviews and figured I had nothing to lose so I tried it out. I must say this stuff is amazing, I added just a little bit over the recommended amount to the rear diff and 2 months later the fluid is still full. I often look under the car to check for drips and there is never a drop. There used to be small drops of gear oil hanging off of the diff about to fall onto the ground but this has completely stopped. You can still see where a very negligible amount of gear oil is leaking down the side of the diff below the seals so I don't think the leaks have stopped 100% but more realistically they've probably stopped about 90-95%. This additive is probably more of a temporary fix because leaking seals usually get worse over time but it's gotten me 2 months without having to pull cv axles and replace the seals so I am very pleased. I cannot speak on the gear repair or ability to stop noisy rear axles that this product claims because I didn't have that issue but it's ability to stop leaks seems to be great. I had very slow leaks and it did well for me but I doubt this stuff would help with more serious leaks. Overall I think this is a great product! Quality: 10/10 Price: 10/10 Leak repair: 9.8/10

### ⭐⭐⭐⭐⭐ Doesn't hurt to add if you suspect a leak.
*by S***. on July 24, 2025*

Used some in what I suspect to be a slightly leaky (non-limited slip) differential. Good to have just in case.

## Frequently Bought Together

- Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz
- Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart
- Valvoline FlexFill Advanced Full Synthetic 75W-90 Gear Oil 1 QT Pouch

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-27*