I am so impressed with Gas and Diesel Doctor! From Jamie at the front desk to Clint, the technician who worked on our car, they were professional, courteous and helpful. We took our car in for a tune-up, and we were so impressed that they were at work on our vehicle that same morning. We know this because they sent us pictures of the progress they were making, along with recommendations. They didn't do anything they thought was unnecessary, and the work they recommended was reasonable and appropriately priced. They stand behind their work with a two year guarantee. Most impressive of all - they fixed the sun roof trim that had begun to droop without our asking for it, and for no charge! Thank you so much for everything! We'll be back.