We were visiting ABQ, when our DEF tank started acting up. We were leaving the next day. Called everywhere with no callback. Then we found Daniel with By The Book. He even texted with my wife on a Sunday! We took our truck in the next day after the code light went off by itself...lol. They tested Def and checked everything they could. Good honest people are hard to find, but this garage is BOTH! We made it back to Okc with no problems at all. I wish you were closer, as we would use you for all our truck issues. Thank you so much, Daniel!