I've been going to AG Diesel Repair for six months, and I like that their service is very thorough and detailed. They perform general maintenance as needed on my vehicle--and have done a lot of things like changing the fluids and such, and repairing the fuel injector. I think their price was very expensive, but I occasionally go to them for some of the work. I use them mainly for convenience because they offer a shuttle service and are right near my work.