@Arnold D. Cribari posted:Regarding smoke fluid, is it advisable to add it when the smoke unit is hot when the locomotive has been running for a while? Could doing so cause damage to the smoke unit?
Arnold
Not sure about most smoke units, but I have read that applying room temperature smoke fluid to hot glass bulb heating elements in the early (ca 1946) 671 and 2020 turbines, as well as those used on early Berks, is a bad idea - the bulbs could crack when they're hot. I run fluid in my 671 but have not been willing to apply it to a hot bulb - FYI, the bulb design was supposed to use #196 Smoke Pellets
George