RDS Aluminum manufactures various types of diesel fuel tanks, including in-bed auxiliary fuel tanks that can be hooked up to your OEM fuel tank using a gravity fill kit allowing you to go longer between fill ups.  The tanks come with or without a toolbox option and are available in many different sizes to fit your vehicle.  Also, RDS builds transfer tanks that we can install a pump on for you to keep your truck or other equipment filled with diesel.  Give us a call or come by to see what is available for you.