I purchased a prestone Flush and fill kit for my vanagon.  It includes a
tee fitting, with cap, that should be placed in the inlet line to the
heater, the tee then connects to a garden hose, and includes an antiback
flow device (to prevent coolant from entering your hose)

  On my 86 Vanagon, I installed the tee near the starter motor on the heater
inlet line.  with the tee Not connected to the garden hose, I ran some NON
ACID radiator flush until the engine was warm, them let it cool off, and
hook up the garden hose to the tee, and start the water flow with the
pressure cap off (Important, as many municaple water systems have much
higher pressure than your pressure cap, and the flow rate from the hose can
over pressure you system (cause hoses to bulge)
  Then run the engine with the garden hose running, this will remove all the
flush chemical. (Use NON ACID flush, else heads might be harmed)
  works great!

dave

----- Original Message -----
From: "Daniel L. Katz" <katzd54@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, July 21, 2004 9:53 AM
Subject: Re: got to fix the cooling system again.

> jerry:
>
> type of leak not indicated, but orange stuff does have a great seeking
> ability.
>
> dan
>
>
>
> On Wed, 21 Jul 2004 10:45:55 -0400, Bike Florida
> <bikeflorida@EARTHLINK.NET> wrote:
>
> >Funny how my van lets me know when I have done something wrong, I had a
> >cracked coolant expansion tank last month, bought a new one and filled
the
> >system with prestone orange and tap water. I knew all along that I
> shouldn't
> >put tap water in my bus, and I was itching to remove it. But I figured I
> >would wait 6 months and change it out then. Well, the little bitty hose
> >going to the oil cooler sprung a leak, and I see there is no way to
change
> >it without draing half my coolant, so I went the the VW dealer and paid
> $17
> >for a jug of the blue stuff, I will put it in with distilled water after
I
> >change the hose. Only problem is, I want to flush the system. Do I just
> >stick a garden hose in one of the hoses and flush it through?
> >
> >Jerry
>