@Train Nut posted:
I have two pieces of junk 30-inch Fastrack. I put a paper towel double thickness on the first one and wet it with Goo Gone. I push the car back and forth moving the paper towel to a clean spot every so often. When I feel it's clean I run it across the other piece of track with a new piece of paper towel to remove any residual dirt and Goo Gone.
Goo Gone is one of the worst things to use. There is much research on this topic. I will give you a link that has a lot of links in it leading to articles about cleaning track & wheels.