Auxiliary fuel tank

Peggy bought me a 36 gallon tank from Tractor Supply, and a filler pump/nozzle off Craigslist for Christmas a couple years ago. I absolutely love it. It gives me a total of 72-75 gallons, which translates to once-a-day fillups. I usually fill up at the end of the day when I'm unhooked from the toyhauler. We also have the option of stopping at rest stops instead of fuel stations. It's most definitely a win-win situation.

Just be aware that a very large fuel tank adds a lot of weight to your truck.

We have a 100 gallon TransferFlow in the bed of our truck. We can travel over 1200 miles towing or around 1800 not towing. Nice filling up when we find low priced diesel. $1.69 a gallon at one station in our area.

We also have the 51 gallon RDS for diesel. Install is not difficult. I have had my current tank in my last two trucks. Good luck.

RDS is my preferred brand. Northern Tool carries them. My Ford dealers installed the two I've had. As others have mentioned, gravity feed is good with me. I have a ball valve in the line in case I want to shut it off.

I usually go big. I've had the 90 gallon models with a tool box on top. It works great and the tool box lid locks. RDS is offering multiple sizes now on the same capacities. I used to have a 90 gallon that sat flush with the top of the bed. Now I have a 90 gallon model that sits about 3" higher than the bed but takes up less bed space.

Only negative is they aren't true to their claimed capacity. No matter what I try, I can only get around 85 gallons in my 90 gallon tank. But with my stock tank, that gives me a good 120 gallons of diesel. I could almost pull the camper to Disney and back with that much fuel. Without any load and I could probably make it to Las Vegas.

Yep, have a 50 gallon RDS tool box/aux tank combo with gravity feed. Have an 800 mile range now versus the 300 I used to. Found mine on CL for $300, but took about 2 months of searching and being patient.

I have a 63 gal RDS tank in my bed with gravity feed and like it very much. That gives me a total of 98 gal. That gives me a range of 800+ miles while towing my 5th wheel.

Diesel right?
Was just looking at an Al one the other day. Looked like the type with a gravity drain to the main tank. Very simple setup and looked easy to install. But the guy had spilled diesel while filling it and the whole area stank of it.

I've had one in my trucks since 1983 - as a matter of fact, I'm still using the same tank. It was made by out local tank and welding shop. I did sand it down and repaint it to match the current truck. Between the two tanks I have 140+ gallons.

I prefer to have a separate pump and extra filters on the tank as I use it to haul fuel for my equipment.

Bill