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Aux fuel tank

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Rappr

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Is anyone running a gravity flow aux tank in their truck and does it cause any problems with the MPG/Miles Remaining until Empty sensors?

I just bought a new 3500 DRW to replace my 2001 F350 DRW and want to swap my RDS 90 gallon tank from the Ford to the Ram (no issues on my old Ford gauges/sensors).
 
I am sure someone has experience with gravity fed diesel and if it will generate a fault code with the “Miles Remaining Until Empty” sensor
 
My understanding was that a gravity flow auxiliary fuel tank is not recommended and prone to leaking and overflowing. I have installed in my 2019 Ram 2500 Cummins Diesel short bed a Titan 40 gal Auxiliary Fuel Tank. It automatically pumps fuel from the top of the tank into the vehicles main tank. There are a range of tank size and placement options.
 
EGT75 said:
My understanding was that a gravity flow auxiliary fuel tank is not recommended and prone to leaking and overflowing. I have installed in my 2019 Ram 2500 Cummins Diesel short bed a Titan 40 gal Auxiliary Fuel Tank. It automatically pumps fuel from the top of the tank into the vehicles main tank. There are a range of tank size and placement options.
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I have used my RDS gravity fed aux tank in my F350 for over 6 years. I installed it and it has never leaked a drop of fuel. My question is; does it cause any default codes?
 
I do not get any error codes by pumping in fuel from the Titan Aux Fuel Tank to the main tank. When I push the button on the controller, it pumps about 5 gals into the main tank. The fuel gauge slowly increases and the Miles to Empty (Range) number slowly increases. I do not get any codes. Not sure why any codes would show.
 
EGT75 said:
I do not get any error codes by pumping in fuel from the Titan Aux Fuel Tank to the main tank. When I push the button on the controller, it pumps about 5 gals into the main tank. The fuel gauge slowly increases and the Miles to Empty (Range) number slowly increases. I do not get any codes. Not sure why any codes would show.
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Thats all I needed to
Know, thanks.
 
Rappr said:
I have used my RDS gravity fed aux tank in my F350 for over 6 years. I installed it and it has never leaked a drop of fuel. My question is; does it cause any default codes?
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I have a friend with a 2012 Ram 2500 with a gravity fed same style tank you have . He has not had a problem
 
EGT75 said:
I do not get any error codes by pumping in fuel from the Titan Aux Fuel Tank to the main tank. When I push the button on the controller, it pumps about 5 gals into the main tank. The fuel gauge slowly increases and the Miles to Empty (Range) number slowly increases. I do not get any codes. Not sure why any codes would show.
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Is your truck has or diesel?
 
Rappr said:
You can ONLY do this with diesel. DOT regulation prohibit it with gasoline (too explosive!)
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Ok thanks, was thinking that was the case. I saw Titan tank sells an aux 15 gallon gas tank that goes over the wheel well in the bed for gasoline. Was thinking of making some 12v pump to fill in the actual gas inlet (when pulled over and truck off of course).
 
I’m running an RDS tank gravity feed.
Its the 41 gallon short bed option for my Megacab.
It’s outstanding and holds about 36 actual gallons.


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NordicNevs said:
I’m running an RDS tank gravity feed.
Its the 41 gallon short bed option for my Megacab.
It’s outstanding and holds about 36 actual gallons.


Sent from my iPhone using Tapatalk
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I asked if anyone had one and if it threw any codes...I never really got an answer.

Now I know...it doesn’t and works like a champ
 
Yupper no codes here nor have I had overfill issues. I have tried leaving gravity on all the time and running my tank empty and refilling. I both scenarios it has been good to go.


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NordicNevs said:
Yupper no codes here nor have I had overfill issues. I have tried leaving gravity on all the time and running my tank empty and refilling. I both scenarios it has been good to go.


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I never even bother filling through the main tank fuel port any more.
 
Rappr said:
I never even bother filling through the main tank fuel port any more.
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Depending on your the size of your aux tank I get it.

For me I have a fuel card for loves pilot petro and a few others so I just bull fill once and call it good.

The tank is certainly nice for sure


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NordicNevs said:
Depending on your the size of your aux tank I get it.

For me I have a fuel card for loves pilot petro and a few others so I just bull fill once and call it good.

The tank is certainly nice for sure


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I have a 91 gallon tank. I pull a heavy 5er so its really nice to bypass expensive diesel pumps. I can pull about 1200 miles without re-fueling.
 
Rappr said:
I have a 91 gallon tank. I pull a heavy 5er so its really nice to bypass expensive diesel pumps. I can pull about 1200 miles without re-fueling.
Click to expand...

What’s your average MPG?


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