: Block Sealer??



calarco3
02-26-08, 12:06 PM
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
02-26-08, 12:41 PM
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
02-26-08, 08:13 PM
STOP LEAK
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/00headgasket1cyl.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/bunching5.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Bunchingupandstopleak.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Headgasket2.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleak44.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleak.jpg
IF YOU PLUG UP THESE HOLES THE ENGINE WILL OVER HEAT
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleakpluggingsteamholes.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleak-1.jpg

dkozloski
02-27-08, 12:38 PM
You'd do less damage to the car if you drained all the water out and drove it around in "limp home" mode.

tateos
02-27-08, 01:50 PM
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
02-27-08, 10:11 PM
Anything remotely strong enough to stop a headgasket leak, will stop up your radiator or heatercore first. Or the above headgaskets.

Bill

Ranger
02-28-08, 10:27 PM
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
02-29-08, 11:26 AM
That's what I thought Ranger, but like I said, the pictures AJ posted looked just like my gaskets

AJxtcman
02-29-08, 12:24 PM
DO NOT USE SEALER TABS IN A NORTHSTAR.
See the Thread in Tech Tips

Sealer build up
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleak.jpg

The steam holes in the Heads had to be drilled out on this engine It plugged them up solid
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleakpluggingsteamholes-1.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleakbuildup-1.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/Stopleak-11.jpg




I need a mouse this laptop is killing me :nono:

Submariner409
02-29-08, 03:49 PM
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
02-29-08, 08:54 PM
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
02-29-08, 08:59 PM
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/cadillac-tech-tips/118096-cooling-system-seal-tabs.html

Submariner409
02-29-08, 10:04 PM
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
02-29-08, 11:09 PM
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
02-29-08, 11:51 PM
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! :hide:

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!

Submariner409
03-01-08, 10:15 AM
Perhaps a better term than "wrong" would be "selectively mistaken".

Anyone can question anyone about anything in these Forums, as long as you don't go to an ad hominem attack. That's one of the good things the Greeks and Romans learned 3,000 years ago: The Forum profits from the questioning and experiences of individuals, but it must be done in a civil manner.

If you re-read the article which AJ posted, carefully, you'll see that GM has not rescinded the supplement requirement. The trouble with the article is that the casual reader may assume the opposite, that a GM procedure has been dropped, which is not true. What I, as an individual, would like to see is a research project by our GM Techs that would clarify the question and be set as a "sticky".

AJxtcman
03-01-08, 12:44 PM
Trust me on this! I like to be questioned! Sub has told me that I was wrong before and I was. I thanked him! I had misread something and I will do it again!

Now the Sealer Tabs
I am in Vegas yet! When I get home I will look up the info and post it!
I have a new camera and I will take a picture of the page in the 1992 training manual. Maybe it is from 1995. The book came out before the 4.0L :hmm: I think is came out before the Northstar hit the road.
I have another updated Northstar training manual from 1997 and another with 2000 changes. Is that one ever a joke!!!!! WOW talk about false info:crowded::helpless:

All the books listed above are Northstar Mechanical Systems!



:histeric:

AJxtcman
03-01-08, 12:53 PM
THIS IS INFORMATION FOR A 1998 NORTHSTAR
NOTICE: When adding coolant, it is important that you use GM Goodwrench DEX-COOLŽ or HAVOLINEŽ DEX-COOLŽ coolant. If Coolant other than DEX-COOLŽ or HAVOLINEŽ DEX-COOLŽ is added to the system the engine coolant will require change sooner; at 50 000 km (30,000 mi) or 24 months.

Notice: This engine uses DEX-COOLŽ and GM coolant supplement (sealant) P/N 3634621 specifically designed for use in aluminum engines. Failure to use the engine coolant supplement (sealant) and the approved coolant antifreeze could result in major engine damage. When refilling the cooling system, add three pellets of the engine coolant supplement sealant GM P/N 3634621 to the lower radiator hose.

AJxtcman
03-01-08, 01:10 PM
A couple of weeks ago GM switched from Service Information (SI) to Global Service Information (GSI). New layout and I am still getting used to it. I just looked at a 2000 Deville in the Engine group at Description and Operation. They had a section for New Product Information. Basically what changes they made from the previous year. The New Product Information is no longer listed :crybaby:

I can tell you that GM did not list the use of pellets when servicing a 2001 Deville.


:rant2: When I get home I will look at the 1993 book again. I am sure that it said not to use them, But I am probably wrong:thumbsup:

PS I hate this laptop.

I have to go now and get hitched

Submariner409
03-01-08, 06:51 PM
AJ.......If you read this anytime within the next 24 hours, we'll all know you're off the deep end !!!!!

HAPPY DAY and ALL THE BEST to you and Jodie from all your looney contacts in here. Y'all have fun !!!!!!!

(Stand by" MARK !!!" 6:53 PM 03-01-08)

AJxtcman
03-01-08, 10:43 PM
Jodie is getting ready to go to diner so I had a few minutes to check e-mails and forums:shhh:

Thank Sub

chubbyranger
03-02-08, 05:53 AM
I have to go now and get hitched


In Vegas, getting hitched and still posting on sealant tabs... truly hardcore :cool2: Sounds like your Jodie is a keeper.

Congrats and have a good time. Say Hi to :elvis3: for us. :thumbsup:

AlBundy
03-02-08, 03:58 PM
Tell her I said hi and I'm glad the back issues are taken care of. I remember when we met in the summer how much pain she was in.

AJxtcman
03-05-08, 06:47 AM
I dug out one of several book that I have and it says that you MUST USE sealer tabs. This is the oldest book I have. This is strange to me because I have never added them.