The system will self bleed as long as it was decently bled in the first
place.  Just keep an eye on the level and top it off as needed and it
should stabilize within a week or two and be fully bled.  As long as it
isn't overheating/boiling out of the tank you should be fine.

Thanks,
Ken Wilford
John 3:16
http://www.vanagain.com
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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
Of Pat Horrocks
Sent: Tuesday, November 29, 2005 8:49 AM
To: vanagon@GERRY.VANAGON.COM
Subject: expansion tank air OK if engine runs cool?

Volks- Since Karl Mullendore isn't available, I was forced to have my
non-vanagon mechanic replace some coolant hoses.   I asked them to
follow the Bentley
when bleeding air, but...

How harmful is air in the left/pressure/expansion tank down to the
right-side
tube ?   I reckon the system self-bleeds, but despite constant
monitoring of
both tanks (non-pressurized/license/overflow coolant at max), NO
low-level light or hot engine temp. on 40 min. drives, I'm paranoid!

Good/bad idea to release some air by twisting blue expansion cap when
engine is warm?

I'm sure it'd be better to re-bleed, but if it ain't broke....

Pat ('90 Westy syncro)