As much as I would like to keep this one as my own personal "bus guru," he should be on the list:
Dallas/Fort Worth, TX
DFW Bus Service and Repair
Julian Castaneda
(214)293-6401
As far as I know, he is only mobile (no shop). He worked for Greyhound for a long time and then MCI. He was in charge of the Dallas MCI shop for a while. In fact, if you watch the MCI J4500 Orientation Walkthrough Video on YouTube (
https://youtu.be/1NoXzCYjZnU?si=hl4HRc-FdJa-2Ntk), he is the one doing the walkthrough. I don't know if he goes back as far as two-strokes, but he definitely knows the four-strokes AND has the computer to do all the diagnostics.
Really good guy and very fair...