We are proudly locally-owned and locally-operated, and we are proud to provide fuel and convenience store merchandise to the communities of southwestern Arizona.Shay Oil Company opened its first gas station in Mobridge, South Dakota, in the 1930's. We sold Phillips 66 gasoline and heating oil; provided minor automobile repairs; and, sold sodas, ice cream, and some grocery items, at our locations in Northern South Dakota.In 1961, the company moved from South Dakota to Yuma, Arizona. Since then, we have grown from a few locations to 19 locations. We have been carrying Chevron fuels and motor oils since the early 1990's. We look forward to your business. Se habla espaol.