Thanks Richard,  It has been a very long while since i have added or
changed (drive the van rarely these days) the coolant.  Maybe two years,
but 3-4 thousand miles.  I can't really see the coolant level in the
pressure vessel, but the overflow tank shows to be full at the maximum mark
with crystal clear blue coolant.  So, do I add more coolant to the overflow
tank, or directly to the pressure tank?  I don't recall ever doing the
latter.  So, should I overfill the overflow tank, drive and expect the
coolant to flow back into the pressure tank? Or can I add coolant to the
overflow tank even if the engine is hot?  I've certainly always thought,
"Don't open a coolant system when hot."
There has been no recurrance of the blinking light.

Regarding the metal pressure vessell, I have considered that in the past,
but have had a hard time justifying the price.

Dave

On Tue, Feb 1, 2022 at 11:46 AM Richard Koerner <rjkinpb@sbcglobal.net>
wrote:

> Yeah, my guess would be low coolant in pressure vessel.  Perhaps some tiny
> leak in hoses or connections.  Of course, very easy fix to add 50/50
> coolant....and then observe for a while.
>
> Side note:  I just ordered the aluminum pressure vessel from Van Cafe.
> Not that I'm having any issues of late.  But word on the street is that the
> plastic tank and the plastic cap tend to degrade over time, and reliable
> parts are getting hard to come by.  Since I plan to keep my Subie 2.2
> Vanagon Tintop for another 30 years and do a lot of long distance travel, I
> figured what the heck, go for it.
>
> On Tuesday, February 1, 2022, 11:35:45 AM PST, David McNeely <
> davmcneely40@gmail.com> wrote:
>
>
> Had an odd incident this morning.  Driving at about 35 mph, ambient temp 24
> F, no wind, temp needle on the LED as usual, having driven about 5 miles
> from cold start, temp led started blinking.  When I could get to a safe
> spot, I pulled over, let the vehicle cool, and went on to my destination
> (another 8 miles) with no reoccurrance.  I then drove home (13 miles),
> stopping to buy coolant just in case.  Right now, the van is in my garage,
> waiting cool down to check for low coolant or leaks.
>
> Any thoughts?  By the time you read this, and anyone gets back to me, I
> will have checked it of course.
>
> David McNeely
>