I have had a good experience with AG Diesel Repair. They have performed about four services on my Sprinter Van. Their technicians do what they say they're going to do and get the job done. I went with a competing service prior to AG Diesel Repair. The competing service cycled through many different mechanics, which felt like changing my vehicle's doctor. I'd rather have the same mechanic, which AG Diesel Repair has been able to accommodate. They're expensive, but you get what you pay for. I would recommend their service.