Could be the moon phases and the associated tides.
Jaime

> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
> Of Jonce Fancher
> Sent: Saturday, November 19, 2005 5:36 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Coolant level changes day to day
>
>
> Hi all
>
> got a mystery to me.
> i have a 85 westi that is going to be getting a new/ rebuild this
> winter and ive been driving about 2-3 times a week over the past
> 3 months. well i sorta watch the
> coolant level and oil for that matter and have found that the
> coolant one time will be low (cold). checked cold from the
> expansion take through the lic. plate
> cover. so i check it it low the next time it is over full the
> next low again. with out adding any coolant. well it ran for
> awhile and found that the coolant had stayed
> low for about 4-5 checkings so i decided to add to put it up to
> the full mark. maybe i shouldnt have done that. i drove it all
> around for about 50 miles here and
> there and then parked it out back in the drive. the next day i
> had a coolant spill and i checked the level and it is above the
> max and about half way up the cap
> with a splash of coolant on the ground where i guess it bypassed
> the water pump seal and dumped out the excess.
>
> so did it hurt the water pump?
> why is it high and low on coolant?
> i will need to bleed off the half way up the cap. but what the heck??
>
> any help will be appreciated thanks Jonce
>
> Jonce Fancher
>
> 57 Single Cab
> 66 Sunroof Bug
> 66 Variant Squareback
> 71 Sunroof Bus
> 75 911S Sunroof
> 84 Vanagon "Godfried"
> 85 Vanagon Westi
> 2003 10 Passenger Sprinter
>
> Fancher's Upholstery Inc. -  www.fanchers.com
> Not-A-VW Club- http://mywebpages.comcast.net/jaransont3/notavwclub/
>