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 GL-4/GL-5 gear oils

🛠️Stops pinion & axle seal leaks

🛡️Anti-wear & anti-corrosion protection

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MX$1795

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Description

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

NOISE REDUCTION TECH - Dramatically cuts grinding, whining, and clunking sounds for a smoother, quieter ride.
EXTENDED GEARBOX LIFE - Advanced seal conditioner boosts system longevity and performance under heavy-duty conditions.
LEAK PROOF CONFIDENCE - Seals pinion, axle, output shaft leaks fast—no more messy drips or costly repairs.
MADE IN THE USA QUALITY - Trusted, high-grade synthetic formula engineered for automotive, marine, agricultural & industrial use.
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 premium synthetic additive designed to stop leaks in pinion, axle, and output shaft seals. Compatible with all major gear oil grades (GL-4, GL-5, MT-1), it reduces gear noise and wear while extending the life of your drivetrain. Ideal for automotive, heavy-duty, marine, and industrial applications, this USA-made formula ensures superior anti-wear, anti-foam, and anti-corrosion protection for a smoother, quieter ride.

Specifications

ASIN	B0869GRFC7
Best Sellers Rank	#8,826 in Automotive ( See Top 100 in Automotive ) #291 in Automotive Oils
Brand Name	Bar's Leaks
Container Type	Bottle
Country of Origin	USA
Customer Reviews	4.4 4.4 out of 5 stars (1,095)
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
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

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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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MX$1795

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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