And my experience has been that any air left in the pressure tank will eventually be expelled
from the system, either through bleeding at the rad, or by the expansion/contraction through
to the expansion tank. If this isn't happening, something may be wrong. I flush my coolant
every two years, and have never had a problem getting the air out - usually only bleed the rad
once or twice after a drive and that's it - the rest works itself out at the engine end. I find it is
best to let the van sit for 15 minutes or more to let any air accumulate in the rad, then bleed
it. There's still plenty of pressure after that time; too much pressure just makes a mess.

On 21 Oct 2007 at 15:28, Malcolm Stebbins <mwstebbins@YAHOO.COM> wrote:

> Fill to top if cap rim, there is to be NO air inthe system, but don't spill it
> over as that's bad for the environment!  The expansion tank (behind license
> plate, had min & max lines. m
>
>
> --- John Runberg <jrunberg@MAC.COM> wrote:
>
> > Guess the answer's pretty obvious, but bears asking anyway. Filled to
> > overflowing -- above the bleed return hose fitting (2.1)?
> >
>
>
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Shawn Wright
http://members.shaw.ca/vwdiesels
'88 Westy 1.6TD 5 speed
'85 Jetta Diesel 1.6NA