[urq] Disappearing Coolant

[Buchholz, Steven]

... I've had a couple situations where I've had small leaks that created
situations like this.  

On the 4kQ there was a pinhole leak in one of the hoses going to the
heater core ... only passed coolant when the engine was hot, and the
resulting spray would evaporate quickly so it was impossible to trace.
One time I pulled into a gas station and noticed a whiff of steam coming
out from the hood right after shutting down ... I quickly popped the
hood and eventually saw the very small stream ... 

On the V8 a crack developed in the plastic coolant reservoir right where
the small diameter bleed hose attaches.  Here again I was mystified for
some time, until once I happened to notice a small puddle of coolant
underneath the attachment point ...

Does the cooling system pressurize appropriately when the engine warms
up?

Steve B
San Jose, CA (USA)
> 
> I have a magical cooling system.  It makes coolant disappear without a
> trace...
> 
> I've been havign to add a few cups every several weeks.  Have not seen
any
> drips after shutdown or while idling hot after driving.  I've had
friends
> (Audi enthusiast friends) drive behind me and although I didn't ask
them to
> look for smoke they are the kind of people who would have noticed and
said
> something.  Don't really see any residue either.  Recently replaced
the
> overflow tank cap as I thought it was the culprit before.