10 Best bars leaks os 1 seals of 2026

Save up to 24% off

1

Bar's Leaks
Bar's Leaks OS-1-4PK Oil Seal Engine Oil Burning/Leak Repair, 16.9 oz, (Pack of 4)

24% Off
Main highlights

Key Features
Seals leaks in all engine types, renews valve seals, stops oil burning & blue smoke. Made in the USA for versatile engine compatibility.

Ideal Use Cases
Perfect for vehicles consuming less than one quart of oil per day, including turbocharged, hybrid, and heavy-duty engines.

Customer Praise
Most reviews highlight its effectiveness in stopping leaks and reducing oil consumption, with noticeable improvements in older engines.
Key specs
- performance:Stops oil burning
- emission control:Reduces blue exhaust smoke
- engine protection:Renews valve seals
- compatibility:Gasoline & diesel engines
- wear reduction:Repairs leaking seals
9.8

Exceptional

Our Rating

9.1
Simple to use

8.0
worth the money

8.0
distance
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
2

Bar's Leaks
Bar's Leaks OS-1-4PK Oil Seal Engine Oil Burning/Leak Repair, 16.9 oz, (Pack of 4)

24% Off
Main highlights

Key Features
Seals leaks in all engine types, renews valve seals, stops oil burning & blue smoke. Made in the USA for versatile engine compatibility.

Ideal Use Cases
Perfect for vehicles consuming less than one quart of oil per day, including turbocharged, hybrid, and heavy-duty engines.

Customer Praise
Most reviews highlight its effectiveness in stopping leaks and reducing oil consumption, with noticeable improvements in older engines.
Key specs
- performance:Stops oil burning
- emission control:Reduces blue exhaust smoke
- engine protection:Renews valve seals
- compatibility:Gasoline & diesel engines
- wear reduction:Repairs leaking seals
9.7

Exceptional

Our Rating

9.1
Simple to use

8.0
worth the money

8.0
distance
3

Bar's Leaks
Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz.

14% Off
Main highlights

Repairs Leaks and Reduces Oil Consumption
Bar's Leaks Oil Seal effectively repairs leaking seals and gaskets, reducing oil consumption in various engine types.

Ideal for Multiple Engine Types
Suitable for gasoline, diesel, turbocharged, EcoBoost, hybrid, and racing engines, as well as heavy-duty applications.

Stops Blue Exhaust Smoke
Highly praised by customers for significantly reducing or eliminating blue exhaust smoke in affected vehicles.
Key specs
- performance:Repairs leaking main seals
- emission control:Reduces blue exhaust smoke
- engine protection:Stops oil burning
- compatibility:Gasoline and diesel engines
- wear reduction:Renews worn valve seals
9.6

Exceptional

Our Rating

8.7
Simple to use

8.0
worth the money

8.0
distance
4

Bar's Leaks
Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz.

14% Off
Main highlights

Repairs Leaks and Reduces Oil Consumption
Bar's Leaks Oil Seal effectively repairs leaking seals and gaskets, reducing oil consumption in various engine types.

Ideal for Multiple Engine Types
Suitable for gasoline, diesel, turbocharged, EcoBoost, hybrid, and racing engines, as well as heavy-duty applications.

Stops Blue Exhaust Smoke
Highly praised by customers for significantly reducing or eliminating blue exhaust smoke in affected vehicles.
Key specs
- performance:Repairs leaking main seals
- emission control:Reduces blue exhaust smoke
- engine protection:Stops oil burning
- compatibility:Gasoline and diesel engines
- wear reduction:Renews worn valve seals
9.5

Excellent

Our Rating

8.7
Simple to use

8.0
worth the money

8.0
distance
5

Bar's Leaks

Bar's Leaks 1334 One Seal Stop Leak - 11 oz
9.3

Excellent

Our Rating
See Today’s Deals & Prices
6

Bar's Leaks
Bar's Leaks HG-1 HEAD SEAL Blown Head Gasket Repair
Main highlights

Comprehensive Leak Repair
Repairs blown head and intake gasket leaks, seals cracked cylinder heads and blocks.

Ideal for Temporary Fixes
Best used for temporary fixes in older vehicles with head gasket issues.

Ease of Use
Customers praise its ease of use and effectiveness over similar products.
Key specs
- product dimensions:9.78 x 3.22 x 3.22 inches
- repair features:Repairs Blown Head And Intake Gasket Leaks
- discontinued status:No
- date available:July 7, 2004
- country of origin:USA
9.1

Excellent

Our Rating

9.1
Simple to use

8.0
worth the money

8.0
distance
7

Bar's Leaks
Bar's Leaks HG-1 HEAD SEAL Blown Head Gasket Repair
Main highlights

Comprehensive Leak Repair
Repairs blown head and intake gasket leaks, seals cracked cylinder heads and blocks.

Ideal for Temporary Fixes
Best used for temporary fixes in older vehicles with head gasket issues.

Ease of Use
Customers praise its ease of use and effectiveness over similar products.
Key specs
- product dimensions:9.78 x 3.22 x 3.22 inches
- repair features:Repairs Blown Head And Intake Gasket Leaks
- discontinued status:No
- date available:July 7, 2004
- country of origin:USA
8.9

Very Good

Our Rating

9.1
Simple to use

8.0
worth the money

8.0
distance
8

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

11% Off
Main highlights

Seals Various Oil Leaks Effectively
Seals timing cover, cam seal, rear main, and other hard-to-stop oil leaks. Add to engine oil. Works better than conventional stop leaks.

Ideal for Rear Main Seal Issues
Specifically designed to seal rear main leaks. Add entire bottle to engine crankcase where you add oil at or between oil changes.

Highly Effective in Stopping Leaks
Customers praise its effectiveness in stopping leaks, especially rear main seal leaks, within a few hundred miles of driving. Highly recommended for maintenance.
Key specs
- product dimensions:1.9 x 3.4 x 7.7 inches
- special features:Seals timing cover, cam seal
- fuel type:N/A
- item size:N/A
- package dimensions:N/A
8.6

Very Good

Our Rating
9

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

11% Off
Main highlights

Seals Various Oil Leaks Effectively
Seals timing cover, cam seal, rear main, and other hard-to-stop oil leaks. Add to engine oil. Works better than conventional stop leaks.

Ideal for Rear Main Seal Issues
Specifically designed to seal rear main leaks. Add entire bottle to engine crankcase where you add oil at or between oil changes.

Highly Effective in Stopping Leaks
Customers praise its effectiveness in stopping leaks, especially rear main seal leaks, within a few hundred miles of driving. Highly recommended for maintenance.
Key specs
- product dimensions:1.9 x 3.4 x 7.7 inches
- special features:Seals timing cover, cam seal
- fuel type:N/A
- item size:N/A
- package dimensions:N/A
8.3

Good

Our Rating
10

Bar's Leaks

Bar's Leaks 1334-5PK One Seal Stop Leak - 11 oz, (Pack of 5)
8.1

Good

Our Rating

10 Best bars leaks os 1 seals of 2026

1

Bar's Leaks OS-1-4PK Oil Seal Engine Oil Burning/Leak Repair, 16.9 oz, (Pack of 4)

9.1

8.0

8.0

How do we rank?

How do we rank?

Analyzing top stores

2

Bar's Leaks OS-1-4PK Oil Seal Engine Oil Burning/Leak Repair, 16.9 oz, (Pack of 4)

9.1

8.0

8.0

3

Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz.

8.7

8.0

8.0

4

Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz.

8.7

8.0

8.0

5

Bar's Leaks 1334 One Seal Stop Leak - 11 oz

6

Bar's Leaks HG-1 HEAD SEAL Blown Head Gasket Repair

9.1

8.0

8.0

7

Bar's Leaks HG-1 HEAD SEAL Blown Head Gasket Repair

9.1

8.0

8.0

8

Bar's Leaks Rear Main Seal Repair, 16.9 oz

9

Bar's Leaks Rear Main Seal Repair, 16.9 oz

10

Bar's Leaks 1334-5PK One Seal Stop Leak - 11 oz, (Pack of 5)

Sign up and get exclusive special deals