October 13, 2011 No Comments Free 22 oz. Dr. Pepper Drink at Murphy USA Log-in or register to download your one-time access coupon! You can only access the coupon once…so be ready to print when you click it! Expires 10/26/11. Free 22 oz. Dr. Pepper Drink at Murphy USA – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.