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

Bar's Leaks axle and differential gear repair

Product ID: 337596010

Details

Brand
Bar's Leaks
Item weight
16.9 Ounces
Liquid volume
16.9 Fluid
Material
Synthetic
Package information
Bottle

🚗Compatible with all gear oils

⚙️Anti-wear & anti-corrosion

🛠️Stops seal leaks

Description

🛡️ Keep your gears tight and your drive flawless — don’t let leaks slow you down!

NOISE NINJA - Reduces grinding, whining, and clunking for a whisper-quiet drive.
GEAR GUARDIAN - Advanced anti-wear agents protect your drivetrain from costly damage.
MADE IN THE USA - Premium quality you can trust, engineered for heavy-duty and everyday vehicles.
LEAK PROOF CONFIDENCE - Seals pinion, axle & output shaft leaks to keep your ride smooth and dry.
UNIVERSAL COMPATIBILITY - Works seamlessly with all synthetic & conventional GL-4, GL-5, MT-1 gear oils.

Bar's Leaks Axle and Differential Gear Repair is a synthetic additive designed to stop seal leaks, reduce noise, and protect gears in manual gearboxes, differentials, and axles. Compatible with all major gear oil grades, it extends system life by preventing wear, corrosion, and foam, ensuring superior drivetrain performance across automotive, heavy-duty, agricultural, marine, and industrial applications.

Specifications

ASIN	B0869GRFC7
Best Sellers Rank	#17,600 in Automotive ( See Top 100 in Automotive ) #372 in Automotive Oils
Brand Name	Bar's Leaks
Compatible Material	gear oil
Container Type	Bottle
Customer Reviews	4.4 4.4 out of 5 stars (1,168)
Included Components	Bar's Leaks Differential Gear Repair
Item Form	Liquid
Item Type Name	Bar's Leaks Axle and Differential Gear Repair
Item Weight	16.9 Ounces
Liquid Volume	16.9 Fluid Ounces
Manufacturer	Bar's Leaks
Material	Synthetic
Model Number	1816
Number of Items	1
Number of Packs	1
Part Number	1816
Recommended Uses For Product	Anti-Friction
Specific Uses For Product	Gear Maintenance and Repair
UPC	046087018163
Unit Count	16.9 Fluid Ounces
Viscosity	75W-90, 80W-90, 75W-140, 85W-140
Warranty Description	Please see manufacturer

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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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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