Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz
Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz
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Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz

4.7 stars out of 1046 reviews
(4.7)|
1,046 ratings

Key item features

  • Leak Prevention: Stops all oil leaks, including rear main, timing cover, and cam seal leaks.
  • Seal Restoration: Restores seals to like-new condition, preventing drying, hardening, and shrinking.
  • Versatile Compatibility: Works with all petroleum-based engine oils, including high-mileage and synthetic oils.
  • Universal Application: Suitable for all vehicle types, including gasoline, diesel, and turbocharged engines.
  • Enhanced Performance: Contains additives to stop leaks in severely worn seals and crankshafts.
  • Comprehensive Sealing: Effective on O-Rings and other gaskets, outperforming conventional stop leaks.
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Current price is $11.42
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Columbus, 43215
Arrives by Fri, Apr 3
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4.477836034318399 stars out of 5, based on 8408 seller reviews(4.5)
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Customer ratings & reviews

4.7 out of 5 stars
stars1,046 ratings986 reviews
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Reviews summary

Pros
  • : Reduces oil consumption and stops leaks.
  • : Stops or slows down oil leaks in the rear main seal within a few days or miles of driving.
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Showing 1-3 of 986 reviews

Feb 26, 2026
David
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

was skeptical but actually worked on front main

as with all snake oil car products as I call them, I am always skeptical. but for my son-in-law's old beater car that was leaking about a quart of oil a month out the front main seal and probably other areas, this actually sealed it up! change the oil and added this to replace part of it. do not overfill your oil! it's been about 2 months now and he hasn't had to add any oil since the oil change. worked quickly no oil spots on my driveway either.

Helpful?2N0XIC8DIWLM52628122
Apr 30, 2025
april
5 out of 5 stars review

Verified Purchase

awesome. ordered for a friend. had it sent to there house. it fixed the truck. and made me 5 bucks. ty Walmart n ty truck fixer stuff!

Helpful?2N0XIC8DIWLM52628122
Mar 26, 2025
WalmartCustomer
5 out of 5 stars review

Verified Purchase

My dad needed this item, just like with Amazon I got a notification that the order arrived on our doorstep.

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Helpful?2N0XIC8DIWLM52628122