How to Fix a Head Gasket with Block Sealer

You can fix small leaks in your head gasket with block sealer. This may or may not work depending on the location and type of leak. If you have some knowledge in mechanics, you can decide if this type of repair will work on your engine. If not, you may need to visit your local auto repair technician.

Fixing a head gasket with block sealer involves several steps. You should not attempt this without having some knowledge of mechanics.

1. Drain all the antifreeze from your radiator.

2. Dispose of the antifreeze according to your local laws.

3. Fully flush your radiator.

4. Prepare the block sealer as indicated on the product's instructions.

5. Add the block sealer.

6. Idle your car for 30 minutes.

7. Drive your car around town then take it out on the highway for a couple hours.

8. With a cool engine, drain the block sealer.

9. Allow car engine to dry for 24 hours.

10. Flush your system again.

11. Add new antifreeze to your radiator.

WARNINGS

• Block sealer and antifreeze cannot be in the engine at the same time.




• This repair is not permanent. You should get your head gasket repaired professionally.