Those lubricants are why it’s critical to flush (or at the very least drain and refill) your coolant system at the manufacturer recommended interval. Not only will the coolant lose its ability to absorb and transfer heat away from the engine like it’s supposed to (you’ll notice your cabin heater doesn’t work as well as it once did too), it could lead to a much more costly repair of a new water pump and/or a new engine entirely.
~Z~ wrote: drove it for about 20 minutes, and the smoke seemed to get less intense as I was finishing up. I’ll do some exploring for a bit tomorrow and hope it’s all done steaming.
Even if it looks like it's dried/evaporated it could still smoke. There's chemicals in coolant that act as lubricant for the water pump, as well as the Ethylene Glycol which is the antifreeze component of coolant and leaves an oily residue when it dries. The latter is what’s causing the smoke.