Aluma seal is a good product that you can get at napa.  Or you can just
use the plain old bars leak.  My 90 Vanagon's PO used it every year from
when he first bought it until he sold it to me.  Never replaced heads or
gaskets in 300k miles.  Still running OE radiator and front heater core
so if you are worried about those getting plugged up I just want to say
I have never seen or experienced this.  You want something that will
also lubricate your water pump and renew your coolant additives besides
sealing the seep.  Bar's Leak will do this I know.

Ken Wilford
John 3:16
www.vanagain.com

John Rodgers wrote:
> I found that orange stuff along a seam and some sheetmetal on my engine
> today. No question but what it is comeing frm a head. It's aint much,
> but it's there.
>
> What's the success rate with plugging this kind of  leak with some kind
> of stop-leak additive to the coolant
>
> What would the list suggest as a good head-leak-stopper-upper?
>
> Regards,
>
> John Rodgers
> 88 GL Driver
>