Recent Topics
coolant capacity 06 lacross 3.8
by lucerne06
3 minutes 27 seconds ago
Touch-up paint thoughts? Mazda Velocity Red Mica
by d00df00d
33 minutes 57 seconds ago
FS: Various Detailing Supplies
by The Critic
43 minutes 40 seconds ago
Need photo software
by Eddie
52 minutes 5 seconds ago
The new Ram
by SteveSRT8
Today at 03:22 PM
Help me select my winter oil
by GSCJR
Today at 03:10 PM
2014 Jetta TDI any better than yrs ago?
by LoneRanger
Today at 03:03 PM
Royal Purple
by mauric3
Today at 02:24 PM
1998 Toyota Corolla Brake Issue
by 01_celica_gt
Today at 01:58 PM
Need info on Bosch Batteries
by Da Game
Today at 01:56 PM
Airbag recall now URGENT status by NHTSA
by 97tbird
Today at 01:21 PM
2014 Subaru Forester or Legacy
by phenix78_99
Today at 01:15 PM
Newest Members
Mkurmve, l1tech, greyghost, banderso, ovidiu
51649 Registered Users
Who's Online
111 registered (2oldtommy, 2009Edge, -SyN-, 123Saab, 2010_FX4, 05LGTLtd, 13 invisible), 1868 Guests and 175 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
51649 Members
64 Forums
221010 Topics
3493292 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG

Topic Options
#612339 - 04/15/04 09:52 AM What's the best radiator sealer?
Anonymous
Unregistered


There is a very minor leak on the radiator of my '96 Cherokee. It's so small I haven't lost enough water in 1000 miles to need to fill it. I'm not quite sure where it's leaking from, but I think it's where the plastic tanks go up against the metal of the radiator. I was looking at the radiator sealer products today at Fred Meyer...there's about 15 different brands. Also there's the walnut shell type and then what they call "aluminized". Several different brands - Bar's, Gunk, Alumaseal, etc. What's the best?

Top
#612340 - 04/15/04 06:19 PM Re: What's the best radiator sealer?
doitmyself Offline


Registered: 06/03/02
Posts: 4739
Loc: MI
Hi Zmoz,

I have always used Bar's Leaks with good results. It will postpone a repair for a year or two. I use the goopy pellet stuff in the brown bottle. It has never plugged anything up and seems to be safe for water pumps, etc..

I live in a GM factory town and there is an urban legend from GM employees and local mechanics that GM puts this stuff in their new cars at the factory. I have never confirmed this.

Top
#612341 - 04/15/04 07:38 PM Re: What's the best radiator sealer?
dagmando Offline


Registered: 08/18/02
Posts: 233
Loc: Midwest
I second Bar's Leak but I use the liquid stuff in the silver bottle. SAAB owners have been doing this for years to prevent head gasket leaks and the famous SAAB heater core leaks.

Top
#612342 - 04/16/04 09:42 AM Re: What's the best radiator sealer?
W.T.McGlynn Offline


Registered: 04/13/03
Posts: 318
Loc: Lomita,Ca.
"Bar's Leak" hands down,the best.
Have used it for years,and it never let me down.

Top
#612343 - 04/15/04 10:18 PM Re: What's the best radiator sealer?
cryptokid Offline


Registered: 02/01/03
Posts: 1565
Loc: palm beach
dont know what happen to my last post, but anyways ill try it again.

i like to use a little more extreme approach when sealing up leaking radiators and heater cores.
if they are copper or aluminum i will mig weld or braze the leak up while the rad or heater core is in the car. this is much better solution than a mechanic in a can stop leaks.

it the leak is in a plastic section of the rad or heater core, then i replace it. i dont believe any bottled fixer uppers are a viable perminant cost effective solution to a problem.
i mig welder or a torch with a brazing rod is though.

Top
#612344 - 04/15/04 10:40 PM Re: What's the best radiator sealer?
Jelly Offline


Registered: 08/10/03
Posts: 2569
Loc: College Dorm...
Have any of you here talking about how good Bar's Leak works ever visually inspected the "interior" of your cooling system after use of this product? While these products do stop leaks, the system's I've seen after use of "stop leak" products are coated in a brown "sludge".

Your thoughts?

One product I would definitely steer clear of is this stuff...worked great for about four months, but then overflow tank became coated in light brown "sludge" and solid particles appeared in the coolant!

 -

Top
#612345 - 04/16/04 05:44 AM Re: What's the best radiator sealer?
Virtuoso Offline


Registered: 02/25/03
Posts: 2634
Loc: Cow town, NE
Your best bet is to fix it properly rather than load your cooling system with **** . I know it's not what you wanted to hear but it's true. [Smile]

If it's leaking where the plastic endtakes meet the radiator, you can probably recrimp the fingers that are holding the tanks on with a set of vice grips and care. Otherwise I'd buy a new radiator w/ a lifetime warranty.

Top