When my wonderful wife thought she would please me by fueling at Costco when she was there (since I had asked her why she did not do so). However, not knowing this when I drove the vehicle later, I realized something was wrong. I smelled the fuel filler hole with the cap off and said 'Oh, S**t!). I asked my wife where she filled up and she said Costco, like you suggested. I said great, but you put gasoline in the Diesel van!. After determining how much was put in, we started calling around to local mechanics to see if someone could assist as the extracted fuel would not be usable and would need to disposed of properly. Most could not help. Dana said he could. We were grateful. Since we were desperate, the price seemed reasonable. I asked my wife to have them replace the fuel filter too, which I provided and put on the passenger seat. I go to pick up the vehicle... then the trouble starts. First off, they added a $50+ charge for a dipstick. I asked what that was for. Apparently, when they checked the oil (a good practice... to drum up business), the dipstick hit the positive side of the battery cabling and fried. Dana said the dipstick had other burn marks like it had happened before. I said it never happened to me and I never saw any burn marks and could he show me the dipstick. He said sure, and went back to find it. He could not produce it. He would not concede it was their fault. So I paid and said to myself, that was a small price for them to pay to lose a customer. When I got to the vehicle, I noticed the fuel filter is not installed. I go back in to inquire. He said he told my wife it would only be done if needed. I'm not sure how he would know if it was needed or not. My wife did not understand it this way. I replaced it myself, later. Finally, when I go the the fuel station a block away to fill up, I find out Dana and crew left at least 10 gallons in the vehicle. So not a very thorough job of extracting the fuel (they did it manually with a crank pump, I think, and it was probably taking too long for the price he quoted... but that was his mistake). So, as nice as they seem to be, I would not bring any of my vehicles back to them. They seem to like to pass on their mistakes to customers.