RDS Auxilary Fuel Tank

I have a RDS 60gal. fuel and tool and I really like it and I have had it in two different trucks with no problems. If I was buying another one I might drop down to a 40 gal tank with bigger tool box. 40 gal with main tank would get me plenty of fuel to drive all day. That is what I like not having to stop for fuel with the trailer during the day. When we pull in for the night I unhook and while the wife is fixing supper a I go fill up the truck you can get into any kind of station when not hooked up