Block Sealer??

[calarco3]

Has anybody ever tried using any type of additive to stop a leaky head gasket? Got some stuff today that i am going to try before pulling apart the motor, and or replacing it.

[submariner409]

Your exact question has been discussed in here and in Seville/Deville endlessly. The general consensus from all sorts of mechanics and engine builders is that, while some sealers might work for a little while, your best bet is to bite the bullet and do the engine head work properly.

What car, what engine, what year ???? Different answers....

[AJxtcman]

STOP LEAK






IF YOU PLUG UP THESE HOLES THE ENGINE WILL OVER HEAT

[dkozloski]

You'd do less damage to the car if you drained all the water out and drove it around in "limp home" mode.

[tateos]

AJ - my head gaskets looked pretty much just like that - I posted them on my ETC HG project thread - I never added anything but the recommended GM pellets. Do you think the pellets are a bad idea?

Richard Moore

[Rafterd]

Anything remotely strong enough to stop a headgasket leak, will stop up your radiator or heatercore first. Or the above headgaskets.

Bill

[Ranger]

Originally Posted by tateos

AJ - my head gaskets looked pretty much just like that - I posted them on my ETC HG project thread - I never added anything but the recommended GM pellets. Do you think the pellets are a bad idea?

Richard Moore

Don't mean to answer for AJ, but they should not hurt anything.

[tateos]

That's what I thought Ranger, but like I said, the pictures AJ posted looked just like my gaskets

[AJxtcman]

DO NOT USE SEALER TABS IN A NORTHSTAR.
See the Thread in Tech Tips

Sealer build up


The steam holes in the Heads had to be drilled out on this engine It plugged them up solid







I need a mouse this laptop is killing me

[submariner409]

AJ...........Look at your last post, #9. Are you saying that GM has dropped the requirement to use the GM Supplement tablets in 2002 and prior year Northstar vehicles as part of a recommended coolant change ??

I called my tech friend at Fitzgerald Cadillac in Annapolis and he says there's no TSB on this change.

What's up ??

[AJxtcman]

Originally Posted by submariner409

AJ...........Look at your last post, #9. Are you saying that GM has dropped the requirement to use the GM Supplement tablets in 2002 and prior year Northstar vehicles as part of a recommended coolant change ??

I called my tech friend at Fitzgerald Cadillac in Annapolis and he says there's no TSB on this change.

What's up ??

I am in Vegas. When I get home I will dig out the info. I is in a training manual.

[AJxtcman]

Originally Posted by AJxtcman

I am in Vegas. When I get home I will dig out the info. I is in a training manual.

http://www.cadillacforums.com/forums...seal-tabs.html (Cooling System Seal Tabs)

[submariner409]

AJ, I strongly recommend you go back and read your posted note from last September as pertains to Northstars and seal tablets. Your blanket post ^^ which basically says "DON'T" is flat wrong.

Is the article you posted from GM Engineering ? Is the article you posted from GM Corporate ?

Show me the GM TSB that rescinds the requirement to use the GM approved coolant supplement in specific Northstar installations.

I want, in public forum, in this thread, an absolute statement from you, who represent General Motors, that the coolant system supplement tablets are not recommended in any Northstar installation. The members of CadillacForums deserve no less.

[tateos]

The bulletin does say this, which I interpret as meaning DO use the tabs in N*s

TIP: If seal tabs were installed in a vehicle at the factory, it’s OK that the proper amount of tabs be installed if the coolant must be drained and replaced.

[Ur7x]

Originally Posted by submariner409

AJ, I strongly recommend you go back and read your posted note from last September as pertains to Northstars and seal tablets. Your blanket post ^^ which basically says "DON'T" is flat wrong.

Is the article you posted from GM Engineering ? Is the article you posted from GM Corporate ?

Show me the GM TSB that rescinds the requirement to use the GM approved coolant supplement in specific Northstar installations.

I want, in public forum, in this thread, an absolute statement from you, who represent General Motors, that the coolant system supplement tablets are not recommended in any Northstar installation. The members of CadillacForums deserve no less.

Careful Sub!

I once questioned the exalted AJ and got my head bit off by old timers and newbie's alike... He is NEVER wrong.

If he says not to use tabs that's good enough for me!
No documentation is required!