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Author Topic:   Block/Head Sealer
Dirt Freak

Total posts: 279
posted January 31, 2005 11:14 AM  
Guys, what is the absolute best substance to put in my radiator to emergency seal an engine that may be a little hurt? I'm seeing relentless small bubbles in my radiator. The temperature doesn't climb very high while idling, but it did overheat the last time I ran it. I just idled it for twenty minutes and only saw 175 degrees, so it may not be totally shot yet. I'm trying to buy a little time and I've heard some successful stories of coolant additives.

Dirt Freak

Total posts: 238
posted January 31, 2005 11:34 AM  
I've had good luck with Bars Leaks in my street cars.

Dirt Maniac

Total posts: 141
posted January 31, 2005 12:32 PM  
Moroso Ceramic Engine Seal

If this stuff doesnít stop the leaks nothing will. One bottle will do it except for in extreme cases, and by extreme I mean itís loosing water so fast you have to have the hose running into the radiator just to run it more then five minutes. Then you will need 2 bottles.

- When in doubt, hit the gas.

[This message has been edited by ratracer10 (edited January 31, 2005).]

Dirt Full Roller

Total posts: 66
posted February 03, 2005 08:35 PM  
K & W block seal. Its cheaper and works just as well. Most Autozones or Advanced Auto stores have it

Dirt Freak

Total posts: 466
posted February 03, 2005 09:55 PM  
Gm Seal tabs work good and also Liquid Glass.

Dirt Maniac

Total posts: 144
posted February 04, 2005 05:15 AM  
Sodium silicate (purchase @ drug store- street name- liquid glass). The best- liquid glass with the cooper in it ( auto zone-o'reilly's). The trick to any sealer, remove all air pockets- remove theromostat- none of them will work properly with antifreeze in the system!

Dirt Forum Champ
Total posts: 755
posted February 04, 2005 11:01 AM  
Moroso Ceramic Seal does the trick for me. Make sure to read the directions.

Dirt Full Roller

Total posts: 39
posted February 04, 2005 05:16 PM  
Mendtite, sealed a cracked alum block in an Oldsmobile Aroura for me, Have also used in Diesel engines with excellent results.

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