I always carry rescue tape, too.  It works for hoses and such.  but I don't think it would be of much use for a heater core.  mcneely

---- Marco <nwmarco@YAHOO.COM> wrote: 
> I always carry a roll or two of silicone rescue tape in my van. This is exactly what it was designed for.

If you can wrap the leakage area well enough, you may be able to finish your trip with no more leaks and fix it when you get home.

Most FLAPS carry the stuff...

Here's a link from NAPA: 

http://tinyurl.com/lwwcupo

Good luck!

Cheers,
Marco
 

>________________________________
>Date:    Wed, 3 Jul 2013 11:55:19 -0400
>From:    Jamie Auch <jamie@KOOKYMATHTEACHER.COM>
>Subject: Sprung a leak!
>
>I started to hear hissing under the back seat of my '89 auto 2.1 Westy. Anti=
>freeze was coming out of rear heater core. What is the size of the hoses so=
>that I can splice them together? This is a repair while traveling. Thanks.
>
>Jamie Auch
>
>Sent from my iPhone= 
>
>
>

--
David McNeely