Petro Travel Center in San Antonio, TX, located on I-10 at Exit 581, is an ideal stop for travelers and truck drivers. Open 24/7, it offers Shell gas and diesel alongside clean restrooms, laundry, and shower facilities. Guests can enjoy meals at the Iron Skillet restaurant, which has received praise for its good food, though some found the prices a bit high. The center features a large parking area with 250 spaces, providing a safe environment for overnight stays. The staff is noted for their kindness and professionalism, particularly in assisting with vehicle weighing for military moves. The new Black Bear Diner has been positively highlighted as a welcome alternative to typical fast food options. Overall, Petro Travel Center is a clean and friendly place to refresh and stock up on snacks and drinks before continuing the journey.