06 chevy aux fuel tank

We have the transfer flow 50 gallon in our 2016 Ram. Sits in the front of the bed, the bed cover goes right over it when we aren't pulling the 5er. Doesn't get in the way of the hitch. We don't use our truck for anything else except the trailer so our hitch never comes out. But It's all computerized and adds fuel when the system says too. Cost a little more than others but it frees you up from worrying to shut off pump in time or guess how much fuel is left and what not.
We have used transferflow in our last two trucks and love them.
Pay the extra for a price of mind and easy install.

Depends on your wants/needs. I like having the whole box avail for the "whatever" I toss in it. Others, like to have lots of fuel and less box avail for the "whatever's". Last and current truck, I replaced stock fuel tanks w/ Transfer-flows replacement tank. As stated, not cheap, few hours of time to replace and doubled fuel capacity w/o sacrificing box "space". If you have a short box, a in-bed tank will DEFINITELY reduce things. Not saying you can't. Many w/ long boxes can add a in-bed tank and still have same amount of room left as short boxes w/o tanks.

I have the 52 gallon Titan and it has been working great for the past 9 years. My OEM 26 gallon tank just wasn't getting it done. Expensive, but worth it in my book.

I have a 90 gallon transfer flow. It has a pump and adds fuel to the main tank when the computer tells it to. Not cheap but works great

I eventually plan on getting a RDS 90 GAL tank and tool box combo. Only thing stopping me is every time I come close to having the money life gets in the way. Ill just do the gravity feed kit.

The good ones are not cheap. I have an RDS 60 gallon tank that will fit under a cover. I use a small fuel pump (some say just gravity will do, and some say that it flows too slowly to keep up at times) and an electric shut-off valve (because the truck's ECM does not like being overfull for too long) and a nice illuminated switch (green for diesel) in the overhead console to energize the isolation valve and pump. Also an Auto Meter gauge for it, with matching red illumination, in the center console. It's a slick set-up and the total cost was around $800.00 for everything. I did the install myself.

I love it. 2000+ highway (23 mpg @ 70 mph) miles range unloaded. In town I fuel up every month or so.