I have run Spic&Span and CLR(calcium, lime, rust) in the cooling system for
a couple days, then drained, ran with plain water for a day, drained and
fill with coolant.  Repeat as necessary.  This removed a lot of rust and
scale from my system.

Worked for me, I'm sure someone will pipe up saying how wrong this is,
decide for yourself.

BTW, this procedure is assuming all other cooling issues have been
solved(air pockets, stuck thermostat, etc..

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Larry Word
Sent: Wednesday, June 11, 2003 11:11 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Best way to clean out a 1985 Vanagon Radiator?

I own a 1985 Vanagon that wants to run hot last 30 days.

I can drive forever if the heater is on.....needle just above idiot light on
dash for water level (I used to run just below this....).  Also my engine,
if overheating, can be cooled down significately by stopping only 5 minutes.

*My radiator was OEM replaced 2 yrs. ago but I have put in 2 treatments (1
per year) on "alum. seal" into that new radiator.

?Help.  Need to cool my engine running temp. down B4 I hurt my engine.  What
is the best way to clean this radiator out WITHOUT going to the radiator
shop.  That may be my next step.

Thanks for inputs

Larry