Additional fuel carrying capacity on pickup

I was looking at the Titan tanks a number of years ago. My '02 D'max has 26 gal and the replacement is 45 or 46 gal. Can't remember for sure. I do carry a 5 gal can in the bed as a spare, but I just plan for my range. Hell, at a certain age, you've got to stop every 3 hours to pee, so just find a place to fill up. If DW's with you, it's usually every hour. :-) I know that, on my way to Colorado, I have certain stops, and that includes the rest area / tourist office just E of the AZ border on 40. We go in, pee and I dump the 5 gals in, and I can make it all the way to Gallup, after topping off in Payson AZ. Just refill the jug when I stop in Gallup. Because I almost never travel alone, I really don't need the larger tank. Yeah, it'd help me find cheaper fuel and bypass more expensive areas, but it's not that big a deal. If I needed to, I'd bring 2 5 gal jugs...just in case.

Lyle