Thank you gentlemen for your replies. This novice appreciates your information.

Hello, I have a couple of questions.
I have n scale locomotive and I am wanting to know what is the maximum amount of cars the engine can pull?
Is rubbing alcohol safe for cleaning tracks?
what is the best way to clean train wheels - or does this need to be done?
I have the N scale Prairie locomotive and I am not sure how to grease the gears inside the engine casing. An older video from Bachmann suggested removing a cap at the back of the engine by the coal tender. The engine I received doesn't have a cap, but a square fitting with a plastic protective cover. Do I pull it out, or try to pull this off?
Thanks. 

Great tips. Thanks for responding.

thank you Sir.

Hello, novice here. I have purchased N scale Durango and Silverton train set. I have purchase plywood to use for the layout. what is the best way to attach the track to the wood. The set came with the EZ track. Thanks for your assistance.