not saying I wouldn't but since you asked

the downsides are

Gravity feed is not DOT approved ( just like a sump )
Gravity feed can leave the full contents of the tank on the ground

i would at least want an inline filter
but with the transfer pump style a better filtration/water separation is easier to implement IMO or from the options i have seen so maybe i am not up to speed

 

im doing the same thing as you for the most part. I am going to install a remote valve and switch on mine with timer as-well. Since i have a kubota tractor and buy filters for it few bucks. They work great and it just goes on with jap straps so easy to change inline. They also clog if water hits them.

Theory of operation for me. I hit switch in cab that will cycle valve open. It will allow fuel to flow for ?? amount of time then close valve. I'm doing it this way just encase the flow check valve thing malfunctions and allows to over flow. I'm also doing a timer so i don't accidentally leave the dang thing open.

Side note on this too, I also thought about putting a liquid detecting probe in the fill tube as well. so if it senses fuel it will auto shunt valve. Should be able to get one for a few bucks too. Sorry i work with electronics a lot so i tend to go crazy.

 

Those are good ideas. I like the remote valve. I may look into that as well.

 

I have the system you are wanting to run, and it works great. I have used it in my last 3 trucks with no problems. Like mentioned earlier you will definitely want a pump to control when you add fuel to your trucks tank.

I have the RDS install kit and I have an electric solenoid valve between the tank and my 12v diesel pump. The solenoid is normally closed until I flip my upfitter switch. Then the solenoid opens and the pump starts pumping from aux tank into truck tank. Solenoid keeps you from loosing all your fuel from aux tank if there is a problem.

I also run an in-line Wix filter from parts store just for extra insurance.

Good luck, and I highly recommend them, I have a 45 gallon tank/toolbox combo and love it on long trips pulling a trailer.

 

I did. I have a 55 gallon tank in the bed. Its gravity fed into the tank. I have a switch in-cab to open the valve that flows to the roll-over valve. I used a kubota Diesel Tractor filter. Same kind that's on my Kubota BX2370-1. I change it every six months or so. Its amazing the GUNK in that thing.

 

I gravity fed my last truck. Had the remote ball valve.

It fed about as fast as I consumed under heavy load. I'd flip open the valve at 1/2 a tank and the needle would not move. It worked but slow.

My point , get a pump.
I'll never gravity feed again.


Sent from my iPhone using Tapatalk

 

Gravity feed works, but as CJATE said, it wont win any filling races. Mine transfers about a gallon every 2-5 minutes depending on Transfer tank fullness.. Good for long hwy drives. I turn my switch on the transfer at about 3/4 tank.

On our trip to Montana then to Minnesota then back to Arkansas. IT WAS GREAT!! I was averaging about 900 miles before filling up. could of gone another 100 or so.