Except for my current '65 all of my trucks had/have dual tanks and it is a great thing.
I almost hate to say this, but my flat bed actually has 3 tanks. The 3rd tank has a pump on it and I use it currently for diesel. But for the amount of diesel I use it's overkill, it's like 60 gallons I think. It currently has about 20 gallons of diesel. One problem is I don't have a gauge for the tank, so it's hard to tell how much is in there.
It would be more useful to me with gasoline in it. That would give the flatbed a decent range, it has a 17 gallon and a 25 gallon tank in it also.
