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Open Roads Forum  >  Tow Vehicles

 > Question for those with an Auxiliary diesel fuel tank

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Bionic Man

Colorado

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Posted: 07/14/22 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

I went to a diesel performance shop today. They recommended a simple, 1/4" inline fuel filter between the aux tank and the OEM tank.


2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010

fj12ryder

Platte City, MO

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Posted: 07/14/22 02:03pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the input, I wondered if those would work well enough, but I guess they do.


Howard and Peggy

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Grit dog

Black Diamond, WA

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Posted: 07/14/22 02:39pm Link  |  Quote  |  Print  |  Notify Moderator

fj12ryder wrote:

Thanks for the input, I wondered if those would work well enough, but I guess they do.


Of course.

They'll catch any large junk. And anything small enough to pass through a single paper filter will also pass through a fuel pump just fine.

Great chance it has nothing to do with the slip tank anyway. Doesn't compute unless somehow someone with a pristine truck who's pretty OCD about their vehicles (like Bionic is, based on his posts) would have more crud in the tank than most construction equipment.


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold

SDcampowneroperator

South Dakota

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Posted: 07/14/22 08:28pm Link  |  Quote  |  Print  |  Notify Moderator

I have had, made my own in bed 55 to now 85 gal. in bed aux. tank since 1984. None have been plumbed into the truck Always used an GPI electric pump for transfer with a Goldenrod water separator filter.
Aux. tanks do have water condensation issues when they are not full. The water separator filter has saved us many a OEM fuel filter, and I just dry them out and reuse them.
Our reasoning for not plumbing the aux. into the main, is for filtration and in boondocking season and summer season to switch to gas from diesel to fill mowers gennys and such. The truck became a filling station. Gas cans a thing of the past. We buy fuel when and where we want, at the best price.

Bionic Man

Colorado

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Posted: 07/20/22 10:38am Link  |  Quote  |  Print  |  Notify Moderator

Just an update. I’ve added a inline fuel filter between the aux tank and the regular filler liner.

I also added a filter on the aux tank overflow tube since they are inexpensive and it seems like the contamination could possibly be coming from that?

The one issue I had is that the one time I left the manual valve open from the aux tank, it did over fill the main tank, probably lost a couple cups of fuel before I saw that. Any idea why that would happen?

Im still considering a spin on type fuel filter but not 100% convinced that it will work with a gravity feed.

These are the filters I’m using now. Filter

Turtle n Peeps

California

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Posted: 07/20/22 11:13am Link  |  Quote  |  Print  |  Notify Moderator

A spin on will work just fine on gravity feed. I have many tanks on my ranch with spin-ons.


~ Too many freaks & not enough circuses ~


"Life is not tried ~ it is merely survived ~ if you're standing
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fj12ryder

Platte City, MO

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Posted: 07/20/22 12:22pm Link  |  Quote  |  Print  |  Notify Moderator

Bionic Man wrote:

Just an update. I’ve added a inline fuel filter between the aux tank and the regular filler liner.

I also added a filter on the aux tank overflow tube since they are inexpensive and it seems like the contamination could possibly be coming from that?

The one issue I had is that the one time I left the manual valve open from the aux tank, it did over fill the main tank, probably lost a couple cups of fuel before I saw that. Any idea why that would happen?

Im still considering a spin on type fuel filter but not 100% convinced that it will work with a gravity feed.

These are the filters I’m using now. Filter
Fixed the link: Inline Fuel Filters.

I discovered our new-to-us truck already has the feed line hooked up for an auxiliary tank, which makes sense because I believe the guy used it for hotshotting. But the nice thing is he, or whoever, hooked up a nice lighted rocker switch on the dash that operates a solenoid valve for the auxiliary tank feed. So, if and when I get a tank I'll be set up ready to go. Just run the line to the valve, and BOOM done.

Beaker

Brevard, NC

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Posted: 07/20/22 01:52pm Link  |  Quote  |  Print  |  Notify Moderator

My Transfer Flow has a filter between tank and fill tube.
Has plugged once in 14 years and the system alerted me to that fact.


2008 Silverado 2500HD Duramax
2010 Cruiser 26RK

fj12ryder

Platte City, MO

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Posted: 07/20/22 02:43pm Link  |  Quote  |  Print  |  Notify Moderator

Beaker wrote:

My Transfer Flow has a filter between tank and fill tube.
Has plugged once in 14 years and the system alerted me to that fact.
Was the plug caused by a cumulative effect, or a one-time piece of crud?

Beaker

Brevard, NC

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Posted: 07/21/22 11:34am Link  |  Quote  |  Print  |  Notify Moderator

No large piece of crud seen.

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