Well, I had Fastrak years ago, and now have Atlas, and I have never had any problems running any three rail locos as long as it is not a modern one fitted with scale wheels.
Oldest: Marx tinplate wind up 0-4-0 and four car consist (my Dad's from around 1934)
My own Oldest: Marx 0-4-0 electric (plastic body) from 1950s.
All kinds of Marx, Kusan, Lionel post-war stuff.
All kinds of modern MPC and later stuff
Most recent: new Lionel, arrived this week.