Brought my car here twice, once for an oil change and then to have my brakes done. Found that they were reliable and honest- two qualities that are invaluable to a mechanic shop. Since it's a smaller shop (only 2 mechanics working) they really take extra care to make sure you're happy and everything is done right. You don't feel like just another faceless customer like at big dealerships. So they have a loyal customer in me even though the shop is 45 mins on the other side of town.
Bottom line: expert mechanics, honest, fast, Ford dealership experience. They can fix diesel engines or gas, big trucks or little cars. if it has a problem, AJ's can fix it.