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RDS Tank?

Elwoodj
Explorer
Explorer
What size rds tank would you choose for your new 8 foot bed truck 3500, 50, 75 or go big or not at all 95-100?
Elwood & Kathy
36' CK3 Mobile Suite - 2006
2004 Dodge Ram Cummins 6 speed
HO 600 373
19 REPLIES 19

Willcamp4
Explorer
Explorer
I love my truck, but the one complaint I have is that with the short bed it has a small fuel tank. I put in a 41 gallon RDS with the auto feed connection and it gives me the ability to fill up both tanks and go to an area with high gas prices and not have to fill up there. The other thing is that when on a long trip I can often drive to my destination and still have fuel left. I will say that the only complaint I have about RDS is that they are aluminum and can get damaged easily. I am happy with that size as it doesn't take up too much room in the bed. Just so you are aware, you will always have a few gallons of fuel that will remain in the bottom of the tank, that will not drain out through the auto feed system.
Willcamp4
2012 Ford F-250 Super Duty, Crew Cab, Lariat, 6.7L PSTD, Air Lift rear suspension.
Alpenlite Valhalla Limited Fifth Wheel, two Solar panels, four six-volt batteries, two Honda EU2000i generators

allen8106
Explorer
Explorer
At my age I have to stop and pee long before I have to refill my 36 gallons so i just fill up at the same time.
2010 Eagle Super Lite 315RLDS
2018 GMC Sierra 3500HD 6.6L Duramax

2010 Nights 45
2011 Nights 70
2012 Nights 144
2013 Nights 46
2014 Nights 49
2015 Nights 57
2016 Nights 73
2017 Nights 40
2018 Nights 56
2019 Nights 76
2020 Nights 68

Grit_dog
Nomad III
Nomad III
At least most of the nay Sayers stayed off this thread.
If a person is more interested in other things in life than finding the very next fuel stop available, or, gosh, is somehow trying to make some time and not interested in visiting every other loves or flying J on I 80 then aux fuel tanks make sense.
I've packed slip tanks in my work trucks (gassers) for years. Had opportunity to toss one in my personal truck for a X country trip last year......was great.
Only stopped once for fuel between WA and WI. I had to get out and pump my fuel into the truck, but way more convienent than stopping 5x for fuel in 2 days.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5โ€ turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold

actiontowing01
Explorer
Explorer
I been using this tank since 2008,gives me a total of 99 gals with both tanks full. https://www.northerntool.com/shop/tools/product_200461868_200461868

Dave_H_M
Explorer
Explorer
Elwoodj wrote:
Got my new 75 gal rds tank today. It sits about five inches above the bed rail on my new 2018 ram 3500 2wd. Hopefully it will not interfere with the fifth wheel trailer.


I am hoping for you also. :h

It looks like RDS would have or did publish the height figure in the add.

Elwoodj
Explorer
Explorer
Got my new 75 gal rds tank today. It sits about five inches above the bed rail on my new 2018 ram 3500 2wd. Hopefully it will not interfere with the fifth wheel trailer.
Elwood & Kathy
36' CK3 Mobile Suite - 2006
2004 Dodge Ram Cummins 6 speed
HO 600 373

Bionic_Man
Explorer
Explorer
Sounds like you made a good choice.

For the record, I have the 60 gallon tank/tool box combo. Best upgrade Iโ€™ve done to the truck. Stop when and where you want to, not because you have to find fuel.
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

Elwoodj
Explorer
Explorer
I want to thank everyone for their input. I ordered a 75 gal rds tool tank combo ((72537).
Elwood & Kathy
36' CK3 Mobile Suite - 2006
2004 Dodge Ram Cummins 6 speed
HO 600 373

Vette_Racer
Explorer
Explorer
I use a 95 gal gravity feed tank, works great and just pulled 700 miles without stopping for fuel, only get around 8.0 so this works for me. Love being able to get fuel when I want, not when I have to. Wouldn't trade it for the world. Saved almost 1 dollar a gallon on fill up. Kind of makes it all worthwhile but even if I didn't save any money it makes it so much easier to get fuel when you want to.
KE5NCP
2016 Ram CC Dually, 2011 HitchHiker 349 RSB DA, 2018 Wrangler unlimited Rubicon

transamz9
Explorer
Explorer
I average around 8.5 mpg and I have a 40 gal gravity fed system and it works great for us.most of our trips are only 2-3 hours but it's great to not have to go get fuel when on our trips. We visit a lot of lakes that are 15-20 miles to the nearest fuel pump and those are usually small town or country stores that I'm sure dont sell alot.
2016 Ram 3500 Mega Cab Limited/2013 Ram 3500 SRW Cummins(sold)/2005 RAM 2500 Cummins/2011 Sandpiper 345 RET (sold) 2015 Sanibel 3601/2008 Nitro Z9 Mercury 250 PRO XS the best motor made.

LanceRKeys
Explorer
Explorer
I put a 40 on mine best thing I have ever done to my truck. If I had an 8ft bed I may have gone bigger. Donโ€™t think I would go 90-100 unless I got to go a lot more.

Lar_s
Explorer
Explorer
I have the 40 gal RDS and it works very well. It allows me to put lawn chairs etc. on top of the tank, still under the hard cover. I do have a tool box in the rear however so that makes my truck 5iver specific most of the time.
Lar

2015 Dynamax Trilogy
36 RL
Ram 3500 Dually

B_O__Plenty
Explorer II
Explorer II
I gave a RDS 62 gal wedge, this is my second truck with it. Even my wife thinks it was a great investment. I use the RDS gravity feed kit with it, works perfectly. What's a few more pounds when you're towing 16,000? Never notice the extra weight.


B.O.
Former Ram/Cummins owner
2015 Silverado 3500 D/A DRW
Yup I'm a fanboy!
2016 Cedar Creek 36CKTS

Brewurown
Explorer
Explorer
Plus the added fuel gives you the option to buy fuel when you find a lower price. My truck don't mind the increase in weight.
Al
2011 Berkshire 360FWS
2010 Montana Mountaineer 335 RET
Hickory Foothills Good Sam Chapter member