I have several post war engines, mostly all the 20 series steam engines and few doubles. When I'd get one, I pull the shell off, go over the wiring, clean the commutator, clean the brushes, oil the axles, and also put a drop of oil on the center of the drive gears, grease wheel gears. All of these engines run smooth and sweet.
When a friend comes over to see my trains, I'll hand them a steam engine to hold and feel how hefty they are. I'd say, just think these were toys.
