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Old 09-05-2016, 07:48 AM   #29
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Replacing the tiny fuel tank is the first thing we do when buying a new truck. We rarely fill on moving days. If I remember correctly, the last time was on our trip to Alaska and after two days of traveling, we had to stop for fuel while connected. We prefer to drop the 5th wheel at a campground and go fill up with just the truck. That way, we do not have to worry about access to the fuel pumps and we can shop more for price if we desire. Not sure why these trucks are designed with such small fuel tanks.
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Old 09-06-2016, 10:35 AM   #30
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An aux tank isn't for everyone, but it can sure help in areas with few stations, or with high prices.
Just back from AK trip--I have a 60 gal aux, and one of the group had the 54 gal Titan replacement tank. Both worked well, especially using GasBuddy to locate lower prices.
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Old 09-09-2016, 10:37 AM   #31
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I have the rds 60 gal. tank that actually holds 58 gals. on my ram. I have the LB but i had it on my SB ram previously. You can't possibly run out of fuel in a day with over 90 gals of fuel at your disposal besides the savings from being able to 'shop' for fuel instead of being at the mercy of the truck-stops. My tank has already paid for itself in fuel savings besides less hassel dealing with low hanging awnings at fuel stops.
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Old 09-09-2016, 01:02 PM   #32
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comfort

We like to take the back roads and stay off interstates. With my Aux tank I can drive all night and not have to worry about looking for a fuel station in the dark in the middle of no where....
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Old 09-09-2016, 01:10 PM   #33
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I've got a 91 gallon RDS fuel tank/tool box and, combined with my under truck tank, I've got well over 1,000 mile towing range. I never have to get fuel with my tow hauler attached. It was an easy install.
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Old 09-09-2016, 08:39 PM   #34
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Got a Transfer Flo 48 gal in a short bed. Auto fill at half ,stops filling at three fourths. Or you can fill it whenever you want. They are pricy but you can move them from truck to truck . Three trs no problems.
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Old 09-09-2016, 11:54 PM   #35
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Tonight we are headed to SE Idaho to see family for three weeks. Fuel light came on in the truck so we pulled off the freeway, refilled the main tank from the transfer, in the middle of no where, and continued on our way. Life is good!
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Old 09-10-2016, 12:49 AM   #36
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Tonight we are headed to SE Idaho to see family for three weeks. Fuel light came on in the truck so we pulled off the freeway, refilled the main tank from the transfer, in the middle of no where, and continued on our way. Life is good!
I leave my transfer tank valve open at all times so that it feeds directly into my main tank. When i see my fuel gauge start to move on my truck, that's when i know my transfer tank is empty and i am on my main tank. My truck is a 2013 ram.
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Old 09-10-2016, 06:07 AM   #37
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Had a '14 Ram diesel dually. I'm thinking it was a 36 gal. stock tank. I dropped a 92 gal. L tank in the long bed and a fuel line to the filler neck with a shut off valve in between. That gave me 130 gal. on board (including the neck) so the range was around 1200-1300 miles!

I could shut off the aux. tank when I wasn't towing and fill it when I saw a good deal, or had a few extra bucks. With the gravity setup when the fuel gauge finely started to move I had about a 350 mile range to find fuel.

I'm looking for a F250 now and thanks to this thread I may look at a long bed so as to have room for an added tank...!
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Old 09-11-2016, 09:02 AM   #38
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.

I'm looking for a F250 now and thanks to this thread I may look at a long bed so as to have room for an added tank...!
I'm driving my 1st SB ever. Not sure about the 17's, but previous models only had 26 gal tanks. I have to fill up every other day for work.
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Old 09-11-2016, 11:11 AM   #39
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I leave my transfer tank valve open at all times so that it feeds directly into my main tank. When i see my fuel gauge start to move on my truck, that's when i know my transfer tank is empty and i am on my main tank. My truck is a 2013 ram.


My tank came with a pump so I haven't connected it into my main fuel system. This works fine for me.
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Old 09-11-2016, 11:25 AM   #40
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"I leave my transfer tank valve open at all times so that it feeds directly into my main tank. When i see my fuel gauge start to move on my truck, that's when i know my transfer tank is empty and i am on my main tank."

Exactly how I use it.
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Old 09-11-2016, 03:16 PM   #41
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On the new Fords (15-16) that's all you can do. I was told by Ford and two after market companies that since they went to a sealed system no more gravity fill. Also RDS does not offer one for these models.


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Old 09-17-2016, 11:51 PM   #42
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On the new Fords (15-16) that's all you can do. I was told by Ford and two after market companies that since they went to a sealed system no more gravity fill. Also RDS does not offer one for these models.


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I'm not familiar with the Fords but my new Dodge also uses a sealed system and my transfer tanks works just fine. I installed the RDS install kit with the check ball valve and it stops the flow when the main tank is full. I also installed a manual valve but always leave it open.

My tank is a 48 gallon unit that is only 9" deep so it does t take much away from the bed space. It also fits under my tonnu cover.

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