"were" is the key word.
Coolant sealant tabs?
Thread Starter
Burning Brakes
Joined: Mar 2006
Posts: 891
Likes: 18
From: Dayton Ohio
Coolant sealant tabs?
In my factory service manual, it says to install some sealant tabs in the surge tank after a coolant change (LT1 only). Can anyone tell me what they are for? I assumed corrosion prevention but I don't want that stuff running around my cooling system for no reason. I have no need for "stop leak" gunk.
Matt
Matt
Heel & Toe
Joined: Jun 2007
Posts: 22
Likes: 1
From: Los Angeles, CA
Good question! When I got my cylinder heads back from Advanced Induction, they included a packet of those tabs. They remind me of those dissolving fish feeder pellets for aquariums.
I'm putting everything back together very carefully and clean, so I also don't want random sh*t floating around in the coolant! I'll have to give Ron at AI a call to see what's up with these things...
I'm putting everything back together very carefully and clean, so I also don't want random sh*t floating around in the coolant! I'll have to give Ron at AI a call to see what's up with these things...
Burning Brakes
Joined: Aug 2000
Posts: 984
Likes: 1
From: Cincinnati OH
Their purpose was to address porosity issues with the aluminum head castings. I don't think they are recommended anymore, but I don't know if it's an official GM bulletin or internet myth.
Interesting thing is that if you read the ingredients it sounds like a good curry recipe.
Interesting thing is that if you read the ingredients it sounds like a good curry recipe.
Team Owner
Joined: Oct 2006
Posts: 20,393
Likes: 431
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17
NCM Member '09
They were originally made for teh Cadillac 4.1's because of teh aluminum head/cast iron block problems of
sealing because of poorly designed gaskets and inferior castings. Teh sealing tabs were, and are very cheap
insurance. Personally, while I sell them everyday, I would never use them....a little Water Wetter, and regular
green coolant, and everything is good!
sealing because of poorly designed gaskets and inferior castings. Teh sealing tabs were, and are very cheap
insurance. Personally, while I sell them everyday, I would never use them....a little Water Wetter, and regular
green coolant, and everything is good!
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Their purpose was to address porosity issues with the aluminum head castings. I don't think they are recommended anymore, but I don't know if it's an official GM bulletin or internet myth.
Interesting thing is that if you read the ingredients it sounds like a good curry recipe.
Interesting thing is that if you read the ingredients it sounds like a good curry recipe.
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