How many do you put in a rear for noisy bearings?

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.

Can I use it for automatic gears?

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.

Can I put this in my f150 differential box it's automatic?

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/

I have a very tiny wheel bearing seal leak, would this work for my 2003 Grand Marquis Ls?

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.

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Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz

Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz

Product ID: 208335013

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Details

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

⚙️Compatible with all GL-4/GL-5 gear oils

🛠️Stops pinion & axle seal leaks

🛡️Anti-wear & anti-corrosion protection

Description

🛠️ Fix leaks, silence noise, and drive with confidence!

MADE IN THE USA - Trusted quality and performance from a brand that professionals rely on.
LEAK STOPPING POWER - Seals pinion, axle, output shaft leaks to keep your ride leak-free and smooth.
NOISE WEAR REDUCTION - Reduces grinding, whining, and clunking for a quieter, longer-lasting drivetrain.
SEAL CONDITIONING BOOST - Extends gear system life by conditioning seals and preventing future leaks.
UNIVERSAL GEAR OIL COMPATIBILITY - Works seamlessly with synthetic & conventional GL-4, GL-5, MT-1 oils including 75W-90 to 85W-140 grades.

Bar's Leaks Axle and Differential Gear Repair is a 16.9 oz petroleum-based 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 provides superior anti-wear, anti-foam, and anti-corrosion protection while reducing noise and extending gear system life. Made in the USA, it’s ideal for automotive, heavy-duty, agricultural, marine, and industrial gear applications.

Specifications

Material	Petroleum
Brand	Bar's Leaks
Package Information	Bottle
Liquid Volume	16.9 Fluid Ounces
Item Weight	16.9 Ounces
Recommended Uses For Product	Anti-Friction
Item Form	Liquid
Manufacturer	Bar's Leaks
Unit Count	16.9 Ounce
UPC	046087018163
Number of Items	1
Model	Differential Gear Repair
Item Weight	1.06 pounds
Product Dimensions	3.5 x 2 x 8.8 inches
Item model number	1816
Manufacturer Part Number	1816

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Excellent communication throughout the order process. Product is perfect.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Smooth transaction and product arrived in perfect condition.

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Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz

Details

Description

Specifications

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