Gas in a diesel tank.

Titan makes extend range tanks for diesel trucks. Any reason you couldn’t use them in the gas versions of the same model truck?

No

In reply to Ranger50 :

Why?

In reply to 80sFast :

I would call them and ask, I'm pretty sure they make tanks for diesel and gas applications. 

It’s actually illegal in the eyes of DOT and also varies state to state to run one as an auxiliary tank for a gasoline truck. Auxilary tanks are meant to hold high flash point fuel. 

Now depending where you live, you can have a Transfer Tank in your bed with gasoline, but it has to have a separate fuel pump handle (like a gas pump) that sticks out of the top of the tank. You also have to have the red diamond stickers that say “GASOLINE” on it as well. 

In reply to SyntheticBlinkerFluid :

These are replacement high capacity tanks, not auxiliary. Does that make a difference?

Like are you talking about a larger tank that replaces the factory tank underneath the truck? 

SyntheticBlinkerFluid said:

Like are you talking about a larger tank that replaces the factory tank underneath the truck? 

Yes

Shouldnt be a problem except for the fuel pickup/sender hole, they may be different sizes. 

SyntheticBlinkerFluid said:

Shouldnt be a problem except for the fuel pickup/sender hole, they may be different sizes. 

Should be fine, the difference allows you to put gas in a diesel tank but not diesel in a gas tank, even though gas in a diesel tank is a much bigger problem. And apparently a lot of places don't even use different sized nozzles.

Diesel tanks won't be equipped for evaporative emissions, since it is a "heavy" fuel and doesn't really make vapors.  Diesel vehicles don't have evap systems at all, just a vent to allow air in and out.

Nozzles should have nothing to do with it, that is part of the filler neck not the tank.

In reply to Knurled. :

Would this be easy to retrofit on a diesel tank?

In reply to 80sFast :

That is a big fat "it depends".  Sometimes, evap stuff like fuel tank pressure sensors have their own mounting holes in the tank.  Sometimes, they have everything external except for the sending unit (possibly so they can share the same tank with gasoline and Diesel models).

Gut feeling is to see if the gasoline model's fuel tank crosses over part number wise with ANY Diesel model.  If so, then there is a much higher chance of not having to do much screwing around.

The only other thing to be careful of is that the extreme-capacity Diesel tanks sometimes get their capacity by expanding into the space the gasoline vehicles used for the charcoal canister.   That, and I also recall from installing a couple of them that they may also get capacity by going taller.  A gasoline tank's fuel pump module might not be able to be stretched to reach the bottom of the tank.

Of course, nothing at all in this is insurmountable, but there may be wailing and gnashing of teeth while wondering exactly why it was better than carrying a couple 5 gallon jerrycans strapped in the bed