I’m not familier with your engine so this is a guess. Are you sure there coolent to the turbo? Maybe it is upstream that is leaking and since turbo is down low is could be pooling and burning off creating smoke. But again, turbo gets hot pretty quick and I would guess that vaporizes fairly quickly.

Plus, you probably would notice more coolent loss than a drip or two. hmm

Ya know…..

Suppose you had a leaking valve guide or turbo oil line and it dripped oil down and ended up in the turbo when engine off. Since the oil wasn’t burned the the cyldender it would heat up in the turbo and make whitish smoke just as mentioned an external oil leak onto a hot manifold, but this would still be internal and come out the pipe!

Unless it is a huge leak, after it burns it off it should run clean. And your coolent drip is a small external drip. Nothing more.

Bet new smog guy is all you need. Fingers crossed.