How are you, Russell? Sorry about your truck.

If there was no (very little) water in the oil, I doubt seriously if you did any turbo damage.

That damn turbo truck of mine sucked coolant for a year, but I never could find "the milkshake" that I was fearing. There would be a puddle under it after every drive (not often because it mostly sat). I kept looking for a bad hose, fitting or something, but never could find it. Turned out, the gasket was breached, but no coolant was getting into the oil. Also, it appeared the exhaust mani had pulled away a bit, cracked the head and opened up a water passage, hence the leak I could hear, but never see.

Check the turbo bearing for front/back play (push/pull test) and if it's OK there, I believe you'll be good to roll. Mine was fine.