Always add fluid. I'm not sure if they do not at the factory. It doesn't matter as it takes weeks for the Loco to get to the States so any fluid added would have mostly evaporated.
Put .5 -1.0 ml of grease into the gearbox "grease screw" port . A couple drops of light oil on the bronze axle bushings between the drivers and the chassis and a drop of oil on all of the rod pivots and on the cross head guides.
Disassembling this particularLoco won't help you lube it, but it will give you a large headache trying to put it back together.
New or Nos. I usually run it in forward for 10 or 15 minutes. Then backward for 10 or 15 minutes without cars to break things in a little.
You may need the re oil the bushing etc after you run it a bit.
