@Tom Stoltz I have a can of the Deoxit D5 and yes, it was expensive. It's gotten great reviews for marine uses, electronics, and audio equipment in particular. I haven't tried it as a track cleaner, but I did use it on a Flyonel Geep. The geep ran poorly even after cleaning the wheels and contacts so I applied some of the Deoxit and it made a huge difference. Throttle became responsive and it started running very smoothly.
Mike A.