I picked this locomotive up in an eBay lot several months ago. It was already clear then that this thing was not in good condition however it wasn't until I decided to work on it, I discovered just how bad it was. The entire drive system was sized and coated in old, dried lubricant. The shell was full of all sorts disgusting debris and covered in dust and stained with rust.
Fiberglass pencil: https://amzn.to/3tPeC8m (affiliate) Canada
Fiberglass pencil: https://amzn.to/2VeB6CU (affiliate) USA