Yes, great smoke rings from the 2025. I've got the companion unit, 2026, and it does the same thing. It's my pride and joy - the Little Engine That Could! My first train from my Dad over 70 years ago. I did replace the smoke unit with a liquid smoke chamber just to be able to use modern smoke fluid. It puffs great rings.
FYI, I added photos of the complete consist. Also was given a Lionel catalog from a relative who was cleaning out the house of his elderly brother-in-law who was a hoarder. He knew about my interest in model trains so thought I would be interested in the catalog. Lo and behold there it was - my 2026 and its consist for the "bargain" price of $49.95 (I'm sure not cheap back then)! It even has the 2025!
Whenever I show the layout to interested friends and family, I always run the 2026 puffing its smoke rings. Brings great joy.
Michael