AC Delco Seal Tabs

brian schuetta · 05-16-2018, 09:28 AM

Anyone using these? They are placed in a water passage of an engine during assembly and dissolve when water is added? Was shown these things yesterday but had never seen them before.

Bobby DiDomenico · 05-16-2018, 09:36 AM

Had, and used, a couple of packages of them when I had the Buick. Wanted to make sure I didn't have to yank the heater core.

Dragsinger · 05-16-2018, 02:07 PM

Brian,

the Delco tabs are a good product. In addition to the method you mentioned they can be put into any cooling system at any time.

The tabs were developed for the North Star Cadallic aluminum blocks which leaked around the head studs.

killintime6968 · 05-16-2018, 02:24 PM

I have used them many times over the years for weaping headgaskets and heads. The PN is #10953473

Chevy55 · 05-16-2018, 02:41 PM

https://www.amsoil.com/techservicesb...%20Tablets.pdf

FED 387 · 05-16-2018, 03:45 PM

12378255 GM part number

Tom Goldman · 05-16-2018, 08:35 PM

The GM "horse pills" saved my butt many times when I ran welded GM 074 castings.
Subaru also has a sealer that works amazingly well and its cheap, about $1.50 for a 3 oz bottle. they call it a "conditioner" but it really works on leaky heads and since its a liquid ,it doesn't block up the rad passages.

brian schuetta · 05-17-2018, 10:45 AM

Will try them then on the new engine we are about to finish.

05-16-2018, 09:36 AM	#2
Bobby DiDomenico Senior Member Join Date: Jun 2002 Posts: 923 Likes: 101 Liked 101 Times in 52 Posts	Re: AC Delco Seal Tabs Had, and used, a couple of packages of them when I had the Buick. Wanted to make sure I didn't have to yank the heater core.

05-16-2018, 02:07 PM	#3
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Re: AC Delco Seal Tabs Brian, the Delco tabs are a good product. In addition to the method you mentioned they can be put into any cooling system at any time. The tabs were developed for the North Star Cadallic aluminum blocks which leaked around the head studs. __________________ Larry Woodfin 471W

05-16-2018, 02:24 PM	#4
killintime6968 Member Join Date: Oct 2009 Location: Whitecourt,Alberta,Canada Posts: 235 Likes: 4,568 Liked 79 Times in 28 Posts	Re: AC Delco Seal Tabs I have used them many times over the years for weaping headgaskets and heads. The PN is #10953473 __________________ Bruce Cameron 68 Nova 396 E/S 68 Camaro SS/? ex Checkmate Modified

05-16-2018, 02:41 PM	#5
Chevy55 Banned Join Date: Nov 2014 Posts: 324 Likes: 625 Liked 179 Times in 89 Posts	Re: AC Delco Seal Tabs https://www.amsoil.com/techservicesb...%20Tablets.pdf

05-16-2018, 03:45 PM	#6
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,409 Likes: 504 Liked 328 Times in 176 Posts	Re: AC Delco Seal Tabs 12378255 GM part number

05-16-2018, 09:28 AM	#1
brian schuetta Member Join Date: Apr 2005 Location: san antonio tx Posts: 259 Likes: 5 Liked 28 Times in 15 Posts	AC Delco Seal Tabs Anyone using these? They are placed in a water passage of an engine during assembly and dissolve when water is added? Was shown these things yesterday but had never seen them before.

05-16-2018, 08:35 PM	#7
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,473 Likes: 878 Liked 857 Times in 234 Posts	Re: AC Delco Seal Tabs The GM "horse pills" saved my butt many times when I ran welded GM 074 castings. Subaru also has a sealer that works amazingly well and its cheap, about $1.50 for a 3 oz bottle. they call it a "conditioner" but it really works on leaky heads and since its a liquid ,it doesn't block up the rad passages. __________________ Tom Goldman 1500 SG , 1506 STK

05-17-2018, 10:45 AM	#8
brian schuetta Member Join Date: Apr 2005 Location: san antonio tx Posts: 259 Likes: 5 Liked 28 Times in 15 Posts	Re: AC Delco Seal Tabs Will try them then on the new engine we are about to finish.