Diesel Doctors was founded by Mark and Scott, two hands-on truck owners who experienced firsthand how broken diesel repair could be. Mark is a Harvard-educated U.S. Army combat medic, trained to make calm, accurate decisions under pressure, while Scott is a pastor with a strong ethical foundation and a lifelong commitment to service. After encountering vague diagnoses, unnecessary repairs, and a lack of accountability in the diesel repair world, they decided to build something better. Both formally studied diesel technology, gained real-world experience inside established repair operations, and assembled a team that includes senior technicians and former dealership leadership.

The result is a shop built on transparency, correct diagnostics, and proof of work – delivering dealership-level repairs at roughly half the dealership price.