Visiting our family in Edgerton from out of town, we suddenly had an engine problem yesterday (Sunday). When I started up the car, the engine was missing, valves tapping, and running very rough. I had no idea what was wrong, so called first thing today to ask if they could check it out, which they agreed to do despite being busy. They test drove the car, ran a computer check, and everything seemed fine, so they cleared us to continue our trip back home without having to pay the evaluation fee (which I had already agreed to). It was probably just a sticky valve.... but something I had never experienced before. Although they didn't have to do any actual repairs, I did rely on their expertise, and had a very pleasant customer experience.