Vanishing coolant mystery

[nmlss2006]

As I mentioned in the other post, my US 996 is back on the road.

But.

But, there was an interesting mystery: the coolant was way down. As in, down by 3 quarts.

The interesting part is: there was none on the ground, there was none in the engine bay (I assume the water pump has the usual weep hole which would cause pretty visible residue and/or spray.

There was no coolant in the oil and, as far as I could tell, no oil in the coolant.

What's my next diagnostic step? I am at a bit (a lot) of a loss.

Thank you everyone!

[Loren]

No oil in the coolant.

Any coolant in the oil?

[nmlss2006]

No sir, the oil was positively beautiful.

And - no smoke from the tailpipes either.

 

I'm really at a loss.

[nmlss2006]

Self-update:

So I read up on the issue and I found, among other things, https://www.renntech.org/topic/44251-996tt-strange-coolant-leak/ .

The experience would be consistent with mine, multiplied by 6.5 years as opposed to three days.

The part where I'm concerned, of course, is the subsequent sudden failure when the glued in connectors decide to give way - if that is indeed what is happening.

On the other hand, I do not know that it makes sense (...) to pull out an engine to get out the coolant distribution block, force out the connectors and bond them again 'just in case', but I hate the concept of not being able to trust that the car won't decide to take a break on me.

From all the videos I could find, it can be *pretty difficult indeed* to say the least to pinpoint things further but.. I'm open to ideas.