---- Gregory Smith <gfs@GREGORYFSMITH.COM> wrote:
> The past couple (ok, few) days I've had a blinking coolant light despite
> having a full pressure tank and good level in the reservoir.  Finally
> got some time today and pipetted some coolant form the pressure tank and
> removed the level sensor. Sure enough the probe tips were coated with a
> dark slime.  Wiped it off and all is well.

Greg, you probably already have a notion about this, but just as a reminder, that "dark slime" could indicate something amiss.  It could be as simple as the cooling system needing a flush and coolant replacement, or it could be a mechanical problem that generates the slime (like blow-by oil getting into the coolant, not likely if the van has been running well).  If there is dark slime on the sensor contacts, there likely is elsewhere, so at minimum, I'd flush and replace.

mcneely