• Greg F
    275
    Hi Everyone,

    Due to the smallish fuel tank in my truck I am considering installing a combo fuel/tool box in the bed. The stock Ram tank only has about 26 gallons and about a 300 mile range.

    I also like the idea of getting some of the heavier tool items out of the trailer and ahead of the rear axle on the truck. This would free up some cargo space in basement for more camping specific items and keep the tools with me when we aren't with the trailer. We have the cargo capacity on the truck to handle the weight of the tools and fuel. (roughly 5200 pounds CCC). The pin on the trailer should be 3,000 pounds or less.

    Does anyone have any experience or recommendations? I am looking at a simple transfer tank that is gravity fed into the trucks tank. This unit is low enough that it won't interfere with the 5th wheel turning.

    This is a leading contender and would give us a lot more driving range and the ability to fuel where we find cheaper diesel and not have to fuel as often, hopefully less often while we are hooked up to the trailer.

    Thoughts? Thanks!

    https://www.northerntool.com/shop/tools/product_200306731_200306731

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  • Greggde
    2
    LOOK INTO A VERY ACCOMODATING COMPANY CALLED
    THE FUEL BOX IN VISALIA , CALIFORNIA ALL OF THEIR PRODUCTS ARE OF GREAT STRENGTH AND QUALITY. I HAVE ONE ORDERED FOR OUR 2020 F-450 LIMITED. MANY OPTIONS TO BE HAD.
    TheFuel Box.com (888) 844-3044
  • jv1taylor
    1
    Take a look at Titan they have a direct replacement for my stock fuel tank 2019 3500. Takes capacity from 36 to 55 gallons. Fits where stock tank is under the truck bed.
  • Greg F
    275
    Thanks for the tip!
  • Greg F
    275
    Thanks. I have looked at the Titan replacement tanks. They would add 20 gallons or so. I think I am liking the in-bed route more though as it adds 90 gallons and also gives me some space to stow tools off the 5th wheel and ahead of the truck rear axle.
  • George
    7
    I would have concerns for the fuel system if you mount a tank above the existing tank. If the tank is mounted to high the fuel pump might be able to handle the extra pressure.
  • Greg F
    275
    That's an interesting thought. These are pretty common. They are gravity fed into the main fuel tank. They do have a manual hand valve next to the tank inside the bed so one could keep that closed and add fuel to the trucks OEM tank when needed without worry over the added head pressure while the engine is running. I'm not sure that the check valve doesn't keep the OEM tank from experiencing any additional pressure. If it didn't I think it would cause the fuel to back out of the vent line and on to the ground. You defiantly gave me something to think about though. :)
  • George
    7
    All fuel injector system wheter diesel or gasoline have a line that returns extra fuel back to the tank from the injector system. Also the OEM tank has to have an airspace above the fuel for expansion when the fuel warms up.
  • Kevin Klein
    5
    Hi Greg,
    I just recently started full timing with a 2017 Ram 3500 with 6.7 Cummins. I have a crew cab with short bed. I am towing a 34ft 5th wheel. I totally get the distance thing. While I was in Lake Havasu, Az I had a company there install a 40gal fuel/ tool box with electric transfer switch. The name of the company is KSH Marine. www.kshmarine.com . Hope this helps. 5hndcgia1air589y.jpg
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  • Kevin Klein
    5
    I like it and the fact that I can transfer fuel while we're driving is cool.
  • aircoupe50
    1
    Hi, I have had a 80 gal tank for some years. Got it I Perry, Florida. Manual valve feeds into added filter and pump then into trucks filler hose. Be careful not to let it over fill.. will over fuel engine causing soot problems
  • Greg F
    275
    We went ahead and ordered it up and it arrived yesterday.

    Install this morning went fairly easy. Fortunately I found a couple videos on the same year/model truck and they were very helpful. This is a gravity fed system. A valve in the bed can shut off flow but there is also a ball valve located where the transfer tank feeder tube intercepts the filler tube that is supposed to prevent overflow. Part of the factory filler tube is cut out and the ball valve inlet is hose clamped in.

    This will give us roughly 1200 mile range and a place to stow my tools.

    Off to the fuel station to put some diesel in it and check for leaks. :)

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  • Ray
    697
    Looks great! Is there anything to be concerned about insurance wise? I guess it's just like carrying a large jug of diesel in the bed. Just wondering if you have to get the installation certified or something. Guess it would vary between different states and provinces. I see the tanks all the time in work trucks around here, we have a lot of logging/mining operations in the backcountry.
  • Greg F
    275
    Thanks!

    No issues I am aware of. The tank is DOT approved for diesel gravity transfer. Diesel isn't very flammable compared to gasoline. The tank is also equipped with a roll over relief vent. Maybe I will shoot our insurance agent a picture and product description so he can add the value of the tank to our insurance in case the truck is stolen.
  • Logan X
    100
    That looks awesome Greg! When are you coming over to do mine?
  • Greg F
    275
    Hold your breath! I'm on my way right now. :razz:
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