To expand on Mike Ms new track comment, new track does let trains run at their maximum potential. I was sceptical about that until I tried cleaned track and new together at once. New is better though I can't figure out why for sure. I can only guess it's not 100% clean inside the tube.
I mày try electrolysis to see if that improves things someday. But mostly Ive just picked up Menards track because it's so low cost with instant results. A loop at my door in 3 days for under $50 has me being lazy. (it is O, not 0-27. Taller and fatter tubes, slightly lower quality than Lionel, about a Marx equal.)
