Sorry but I don't seem to be able to reply to any more posts..
Thanks to everyone for their responses.
Sewing machine oil, I'll definitely pick some up. I was working on the road today (on the Honolulu Rail Project) and there was a sewing machine shop right at the intersection.
I cleaned my track, but there are still a couple of locations where my train stalls and the lights on the cars flicker. I decided to order a new track consisting of 12 curved sections and 2 straights, exactly like my existing track. I also bought a new controller.
My train consists of 1 loco, 1 engine and 7 cars which basically envelops my entire track.

Thanks again.

Hello everyone, I am a train set rookie... I have a Coca Cola Christmas train in HO scale. It's great, but there is a problem. I have one engine and six cars and a caboose. It has worked wonderfully for the past few years but with the last car I received it stalls. It stalls with only one car now. I am wondering if there is a higher powered control unit that I can use.
Any help will be appreciated.
Thanks.