Frank and Paul in Walnut Creek. They are incredibly honest and not as expensive as other auto shops. I've convinced two other people to go to them and they will now only take their cars to them. I know people don't like Yelp but they have over 100 reviews and all of them are 5 stars. The ONLY issue I have is that they are not open on weekends and close around 4 pm. It sucks if you work during the week, basically. And they are so popular that sometimes it's hard to get an appointment quickly, however, they are SO honest and well priced. They saved me $500 two years ago. (925) 939-7964 2770 Camino Diablo, Ste A, Walnut Creek, CA 94597