Alan Mancus posted:I would think not but I would recommend you do not store them upside-down as the fluid will run out to some extent and can get all over the box there stored in n even sometimes get into the electronics! just make sure the engines in there boxes would be upright and should be no issues, some liquid might evaporate in time so you might need to put more drops in before you run them again! I would try and run them before you start adding fluid you might not need to add any fluid!
I always mark my boxes with a "Top" designations and never store any locomotive with a smoke unit other than on it's wheels.
