Coolant leak?

[Morris Minor]

The G37 (2010, 93,000 miles) always reeks of coolant after a run. I had to add more via the coolant filler and also to the expansion tank - took about a quart. It's weird because I don't see any drips - so it's slow & immediately evaporating somewhere. I don't smell it inside the car, just outside from the engine bay. Temp gauge reads fine. Oil looks fine (but it's now burning a little and needs the odd top-up.)

[veeman]

Your sig made me think you have a Dodge Journey.  Sorry about that...

[CaminoRacer]

With the engine running, do you see any leaks? My old Saturn had a pinhole leak in the radiator that shot directly backwards towards the engine. Something like that could squirt the coolant right onto a hot engine or exhaust part and evaporate it immediately

[FoMoJo]

Head gasket?  Could be sucking coolant into a cylinder.  Might see some steam coming out of the tailpipe on startup.

[Morris Minor]

A mechanic (great guy - highly successful mobile business) ran a pressure test for 40 mins and took a close look. Nothing found. He speculated that the header tank filler cap may not be sealed tight & that's where the smell comes from. I'll keep a close eye on it - see if it settles down. I had not looked at it for more than a year before this.

[Morris Minor]

Okay well it it did settle down. went on a long run yesterday - level never budged.
Now I need to give it an autumn  clean.