@OKHIKER posted:I agree with Bob; Mobil 1 synthetic oil is the way to go. It's a quality product which works well with trains. For the amount of time you can and will use it I would say it's very, very inexpensive. I have been using it for years and I have a one quart bottle which is still 98% full.
I’ll third that,....all the products I use are Mobil1 ....oil & grease,...
Pat