10 bestEngine Leak Sealerof October 2025
112M consumers helped this year.
10% off
1
Lucas Oil 10278 Engine Oil Stop Leak - 1 Quart
Lucas Oil
10.0
8% off
2
Bar's Leaks OS-1 Seal (Engine Oil Burning/Leak Repair), 16.9 Fluidounces
Bar's Leaks
10.0
3
STP High Mileage Oil Treatment + Stop Leak Engine Oil Additive, 15 fl oz, Contains ZDDP Anti-Wear Agent to Fight Friction, Rejuvenates Seals and Gaskets, Stops Leaks
STP
10.0
4
Bar's Leaks 1040 Grey Rear Main Seal Repair Concentrate - 16.9 oz.
Bar's Leaks
10.0
5
Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK
Bar's Leaks
9.8
6
Blue Devil (49499) Engine Oil Stop Leak - 8 Ounce
BlueDevil Products
9.6
7
Engine Oil Stop Leak Top Off Additive/6x1/Quart
Lucas Oil
9.3
8
Bar's Leaks 1010 Grey Engine Oil Stop Leak - 11 oz.
Bar's Leaks
9.0
9
XADO ATOMEX Stop Leak Engine Oil Additive Sealer (Bottle, 250 ml) - Repair Gaskets & Seals Treatment
XADO
8.8
40% off
10
Bar's Leaks 1000 Engine Repair - 16 oz.
Bar's Leaks
8.5
Related Reviews You Might Like
Best Reviews Guide Newsletter
Get exclusive articles, recommendations, shopping tips, and sales alerts
Sign up for our newsletter to receive weekly recommendations about seasonal and trendy products
Thank you for subscribing!
By submitting your email address you agree to our Terms and Conditions and Privacy Policy