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 > 90 gal. Aux fuel tank below bed rails. Help.

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speediq99

Arizona

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Posted: 03/19/22 10:25am Link  |  Quote  |  Print  |  Notify Moderator

Hello,

I am looking for a 90g. aux transfer fuel tank that sits below bed rails on Ram 3500.

RDS has a couple but their gas cap sits an inch or so too high making a tonneau cover not possible. It seems like the options I found are either tall rectangular (cannot use cover) or deep rectangular (30 inches of bed gone). Anyone found something tall and thin that works with a cover?

MC

wanderingbob

monticeeo, fla

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Posted: 03/19/22 11:23am Link  |  Quote  |  Print  |  Notify Moderator

It is a matter of math , ninety gallons requires a large amount of volume . I wonder if you could alter the ninety gallon tank and recess the lid ?

BurbMan

Indianapolis, IN

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Posted: 03/19/22 12:47pm Link  |  Quote  |  Print  |  Notify Moderator

Stock tank is 36 gals, if you went with a 60 gal you would triple your range...Why 90 gals?

speediq99

Arizona

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Posted: 03/19/22 01:49pm Link  |  Quote  |  Print  |  Notify Moderator

That might be the best option. It looks like adding a bit more depth and either shrinking or recessing the cap would have been enough. I am just surprised the missed it by an inch or so in most trucks. Covering this liquid gold is important these days.

MC

wanderingbob wrote:

It is a matter of math , ninety gallons requires a large amount of volume . I wonder if you could alter the ninety gallon tank and recess the lid ?


speediq99

Arizona

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Posted: 03/19/22 01:52pm Link  |  Quote  |  Print  |  Notify Moderator

No particular reason other than if I am going to use the bed might as well go big. I can always use 60 or 90 on a pinch.

It actually looks like 60g with a tool box fit well and takes as much room as 90 without one. I just prefer the extra 30 gallons to the toolbox.

MC

BurbMan wrote:

Stock tank is 36 gals, if you went with a 60 gal you would triple your range...Why 90 gals?


BurbMan

Indianapolis, IN

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Posted: 03/19/22 02:56pm Link  |  Quote  |  Print  |  Notify Moderator

No question more is better, but to your point I think keeping it covered trumps that....I paid $5.20 last weekend. Post a link to what you decide on, I've been thinking about doing the same.

RoyF

Fayetteville Arkansas

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Posted: 03/19/22 03:18pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 100-gallon aluminum auxiliary diesel tank that has been sitting unused for a few years. It's a KSH, which is located in Lake Havasu City, Arizona. I would love to get rid or it. It looks exactly like the 100-gallon tanks shown on KSH's website.

Here's the story. A year after it was installed in a Ford F350 diesel, I started to have fuel blockage problems. Mechanics could never find anything wrong with the truck's fuel system, and it only happened when I was drawing fuel from the auxiliary tank. I finally just gave up and removed the tank, and I never had another fuel blockage. I installed a Transfer-Flow tank and just stored the KSH.

After removing the tank and draining it, I looked inside and saw what looked like a marble, or maybe a large ball bearing. It must have been dropped in by accident. (Or was it done by someone as a prank?) That ball must have been rolling around during travel, and now and then it would come to rest over the fuel outlet where it would create a blockage. I'm sure that was the problem all along.

There is the problem of shipping, but if you are interested, please send me a private message.

Cummins12V98

on the road

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Posted: 03/19/22 04:44pm Link  |  Quote  |  Print  |  Notify Moderator

You may want to consider the TITAN 55G replacement tank. This way you can place a nice tool box in the bed instead.


2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

PastorCharlie

NC

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Posted: 03/20/22 06:22pm Link  |  Quote  |  Print  |  Notify Moderator

HERE

Bionic Man

Colorado

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Posted: 03/20/22 08:46pm Link  |  Quote  |  Print  |  Notify Moderator

How much depth do you have?

FWIW, I have the RDS 60 combo. I've never wanted more, 96 gallons give me plenty of range.


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

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