I am looking at hooking up an auxiliary fuel tank (about 19 gallons) and putting it in the rear of the xj. I think im going to grab a fuel pump and hose from a junk yard xj. Anyone do this before? Tips and tricks would be welcomed with smiles. My goal is to be able to have a switch in the front to pump fuel from the aux tank to the main tank when low.

thank you

Just wondering why you need 40 gallons of fuel and don't need trunk space.

The tank is only 24x9x18. So not taking up much space. Plus roof rack for storage, not worried to much about space.

You planning on driving like 550mi before filling up?

Those number for the tank were a little off.

And yes like 500-550

Or whatever the jeep will allow me lol

?

Price. Scepter 20l mfc is 100 at minimum plus mount. I can get the 18 gallon aux fuel tank for $30 with a pump on it.

Honestly I don't really understand the reasoning behind this but you would also have to t the fuel line somewhere.

Would throw that pump in the trash. You may also get hasseled for the fuel tank at inspection... I also am going to assume you'll have to vent it somehow to the outside world.

You can find jerry's for a lot cheaper than that if you do a little digging. I agree with Mr. White. I think you will be creating one problem to solve another.

Seems like the best (safest & smartest) approach would be an auxiliary fuel cell and a firewall, but you won't do that for $30, carry on...

****, **** safety, put the tank in the passenger seat so you don't have to run the wires that far.

Don't need to run wires very far considering I have a second battery in the back. Tank is already enclosed with a vent tube and fire foam sealed.

Inspection doesn't exist where I'm at, so don't care there.

If no info is out there I'm gonna close thread here.

I've heard of a "drop tank" before which is a simple gravity fed auxiliary tank that sits taller than the one it feeds. The principal is simple that once the main tank is full, you can fill the auxiliary tank through a regular gas cap on the tank. When the main tank is consuming too the "drop tank" will continuously fill it.
I don't know how feasible or real this is, but it almost seems like it could work.