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[DrAndyB]

Its a V plate 2.5 V6 CDX, last of the old shape before the facelift model.  Registered 2000 and I have had it from 6 month old so know history 

Car only done 58k miles.

No signs of water in oil, and coolant leak is identical in colour and shade to coolant in header tank - blue/touquoise.

Only drips about a tablespoon or two after the engine has cooled.  Usually start to track and drip an hour or two after switch off.  No drips next day and stays bone dry around HBV.  Appears to drip and track down either side of the bell housing to then finally drip from the two bolts by gearbox/bell housing.

Daz has been recommended  so hopefully should be able to get there in a few weeks to diagnose and sort 

I'll let know when/if get to the bottom of things.

Andy.

[Strangechap]

I had a leak similar to yours. HBV was also bone dry. It was where the hose from the matrix connected to it. It would leak a while after I stopped, leading to drips like you describe. I think it was leaking so slowly the heat was evaporating the coolant off the HBV and it was only when it cooled down enough did it work its way down.

HBV gets my vote. It was clear as day when I took it off as I could see where the coolant had constantly dried.

Rather then trying to guess the cause, take it off and check it, then you can start eliminating stuff.

[DrAndyB]

Cheers.

[Malcolm_D]

Not sure if you have got this sorted but I have just had similar on my 2.6, thought it was the notorious hbv at first so bought one (GM) and swapped it, but still leaking. As it was also time to do the cam covers and breathers I took the opportunity to try to locate the leak, appeared to be from the metal coolant transfer pipe which has a 40mm o ring as it enters the back of the block, a small amount of coolant was dribbling out, onto the bell housing and running down the passenger side. Impossible to find unless the plenum, injector rail etc are removed, even then it was a nightmare of a job! Only way to see it was laid on engine with a torch and a mirror!! Happy days. 

[symes]

from your pics -would say leak is from crossover bridge-under inlet manifold-getting to it is a bit of a pain but costs a couple of washers on banjo bolts