Thanks all for the responses! Not anything hugely surprising in everyone's remarks. Follow up questions for those deeply in the know:
- Does shutting of the smoke unit from Cab-2 really any different from shutting down the smoke unit from the manual switch on the locomotive?
- For regular/extended running, do most of you keep the smoke units off?
- A smoke unit full of fluid (24-48 drops) is not lasting more than ~30mins, correct?
- Smoke fluid types to stay away from (non-Lionel obviously)?
- Smoke unit capacities by locomotive tend to vary, correct?