Robbin
Welcome to the OGR forum. You will find the answers to any O gauge question you have right here and many are just waiting to help you.
Do a search on track cleaning on OGR forum to learn all you could ever want. Most of us have tried several track cleaning methods and many are now using mineral sprites for cleaning and then applying as small amount of NO OX ID conducting grease (yes it a paraffin based grease) treatment (wiped off after treatment) to eliminate all future track cleaning. It has worked for me for over two years and my conventional O27 trains will operate better and slower too.
https://ogrforum.ogaugerr.com/...stant-track-cleaning
https://dfarq.homeip.net/no-ox...r-model-railroading/
https://ogrforum.ogaugerr.com/...3#159096765317812943
Charlie