Coolant cleaning and refill. Indicated by my check engine diagnostics. Took it on faith that it was low and dirty as described to me. Oxygen intake on gasoline fill orifice was not closing properly after fill ups and caused engine service light to come on. Part was replaced. 1st order came in with the wrong part so I had to bring it in for a second day. Because of my inconvenience I was given a 10% discount. Also my car was taken to get a 1/4 tank of gas to check that the repair was completed correctly and the problem was solved. I was not charged for the extra gas. I was given rides to and from the shop both days. Everything about the parts and billing was gone over in detail. Excellent single serving coffee was available during any waiting time. All customer service was gracious and informative. 2 others times I had questions and they were able to help me out without any shop time. Last but not least, they stand behind all their work. I always feel comfortable I will be treated fairly and not be sold something I don't absolutely need. Try them out, see if you agree.