I have had many experiences with Greenwood's service department - mostly bad. First, they were unable to diagnose a minor problem with my car even though I told them EXACTLY what was wrong with it. The service manager that I dealt with dismissed my diagnosis as "impossible". After four failed attempts blindly replacing parts (under warranty) and leaving a few gouges in my interior door panel, I finally got "unpleasant" enough with them to convince them to at least investigate my diagnosis. They at least apologized after they found out I was right, and gave me two free oil changes.
My next experience was with a brake inspection. They removed the rear drums by removing the bearing nuts, which I don't think is the proper method and which they accessed by driving a screwdriver through the dustcaps and prying them out and then put back damaged. I don't know how a dustcap with a hole in it can keep dust out, but one of them fell out anyway. In disgust I replaced it myself.
Finally, after an awkward feeling drive home on my most recent visit, I discovered that when they rotated my tires, they did not bother to adjust the front/rear tire pressure, so I was driving around with overinflated rear tires and underinflated fronts.
Additionally, though I consider it to be poor form to pass along second hand information, I sold a Ford product to an aquaintance which later developed a stalling problem. He took it to Greenwood who diagnosed it as the catalytic converter and offered to replace it for $900. Being dubious of their diagnosis, he took it to another mechanic who determined easily from the car's error code that it was only a sensor on the transaxle and replaced it for $150. The sensor replacement cured the problem and for one-sixth the price of Greenwood's erroneous diagnosis.
Conclusion: Greenwood Ford's service department could not diagnose their way out of the proverbial paper bag and does mediocre work.
To their credit, the service writers are friendly and the technicians did complete both free oil changes successfully...as far as I can tell...though they were slow.