I brought my 718 GT4 in for a brake fluid flush / switch from stock to racing brake fluid. I was really happy with the experience overall. Things which impressed me: - My service advisor explained that they would need to use / charge me for a bit more brake fluid than normal, since we were switching from stock fluid to racing fluid. As such they wanted to make sure they got all the stock fluid out. I appreciate this attention to detail, as well as the transparency. - They returned the car to me having been beautifully detailed. - They allowed me to leave the car there an extra day or two to accommodate my schedule. - Everyone I met there was super nice, and clearly has a shared passion for Porsches. Overall I had a great experience with Callas, and will definitely use them for my future maintenance needs.