one thing i have not seen discused is if you can use and aux tank with a plastic bedliner, will it work, I have one that came with the truck, and I want and aux tank, last time i went camping i spent 45 mins at the gas stationg filling up because i was pulling my camper and could only fit at one pump. and a bunch of stupid non diesel cars kept cutting in line. at that point i decided i needed an aux tank and never have that problem again...

 

It should not be a problem. I have bolted through one before.

 

Go here and talk to them if yo have a long bed
http://supertanks.com/

They now make a replacement tank that I believe is 50 or 60 gallons. That way yo don't even have to put it in the bed

 

According to their web site they are in the process of designing one, you can get put on a waiting list!!!!

 

I put the RDS 60 gallon combination tool box in mine:



With shipping the tank/tool box was just over $600.

 

Big Bob
Did you install the tank yourself? Is the 6way valve a big deal?

 

I put a 91 gal RDS toolbox/fuel tank in mine gravity fed into the main tank like Fiverbob , took about 1 hour and $20 worth of extras

 

I also put a 51 gal Black powdercoated diamondplate tool/tank combo from RDS in. I installed mine via gravity feed, however a little different than fiverbob's setup. He drilled and tapped the fuel filler neck, while I simply 't'ed into the fuel overflow hose, which saved the time and hassle of removing the fuel filler neck, and drilling/tapping it. I also installed a 2 micron Racor fuel filter/separator in line between the main and aux tank, and ran a hose with a 2 micron breather filter coming off the tank's vent so that no dirty air is sucked into the tank when displacing the fuel...

 

where can you get the rds tank in powdercoat black, that would sure look good.

 

I did install it myself. I installed a carter fuel pump, electric shutoff valve and a filter. I have a switch in the cab and I pump into the main tank when it gets low. That way I just use the factory fuel gauge. I plumbed it into the top of the factory fuel tank with an overflow back to the auxiliery tank. Doing this also helped with the slow fill of the factory tank.