RDS Auxiliary Fuel Tank - 32-Gallon Capacity, Model# 71804
Tank arrived on a small pallet with one strap holding it down. Adequate but I expected more. Top side of tank was not covered or protected but it had no dents or dings and was very shiny. Fuel filler cap was broken into 2 pieces. It will have to be replaced. Since it was not packaged in any way that offered protection to the fuel inlet or cap I'm not surprised with the resulting damage. Fortunately the face of the fuel gauge was not damaged. The lens was unscratched and intact but still registered empty when I put 12 gallons in it to test for leaks. I haven't filled it completely yet.
Welds are minimized by using a bend brake to take one sheet of aluminum and bending it 3 times to form a casing requiring welds on only one side and each end. Excellent technique. Welds were smooth and very well done, professional. Light years above some of the welds I've seen on imported items
The unit is NOT a 32 gallon tank. It holds a minimum of 37 gallons. Exterior dimensions are 50X9X20. That totals to 9,000 cubic inches. Since one US gallon is 231 cubic inches then 9,000 / 231 = 38.96 gallons. That figure has to be reduced somewhat because the interior measurements need to be used to determine the true capacity. Needless to say I was pleased to discover that I was getting an extra 5 gallons for free (almost). But if you're near your CGVW then the extra 5 gallons will add another 35+ pounds to your overall total when towing 5th wheels like I do.
Last on my list, the mounting tabs were not properly aligned. They did not lay flat. By standing back a few feet it was obvious they were off level by several degrees. Not a problem functionally nor aestheticly as it won't be seen often but something I felt I should mention it.
There are 2 feeds, a vent and a drain allowing you several methods to tie into your existing fuel system or create your own. All are on the drivers side to aid in checking for problems
I would have given 5 stars but the broken filler cap and incorrect reading on the gauge took the edge off my enthusiasm.
November 16, 2013
RDS tanks are very good value and their customer service is excellent. An easy install.
August 20, 2012
Aux fuel tank
Easy to install. Product was as described. Placed shallow tool box above tank. Cut hole in bottom of tool box for fuel gage and vent fittings. Looks and works like an combo tank/tool box, but much cheaper if you already have the tool box. Can't get full 37 gals in tank, but close.
August 13, 2012
SIMPLE AND EASY INSTALLATION
Purchased for my 2007 Dodge 3500 - surprised at how easy it was to install. Removed 1 1/2" from the hose and installed kit with valve horizontally. Fuel fills the fuel tube and then shuts off with no spillage. Don't forget to add extra fuel hose to the vent for easy flow .
August 26, 2011
Tank works great, and installs very easy. Had it going in about an hour
November 16, 2010
Auxiliary Fuel Tank for my RV
I installed this tank in my truck that I pull my fifth wheel RV with. With an additional 36 feet tagging along you have to be more selective on fuel fill ups (clearance and maneuverability). Now with an additional 37 gallons at 11mpg I don't have to stop when my main tank registers empty.
I do wish Northern would carry the a 12v – Shut Of Valve.
With a flip of a switch the auxiliary tank drains into the main tank and I don't have to leave the cab to make the change.
November 16, 2010
Great size, needs better description
I bought this for my work truck...2006 GMC shortbed with Duramax. I'm in the same boat as lots of reviewers on here. GM needs a bigger tank! I actually USE my truck not just to drive it to work and the store. I have been looking for a good tank that won't take up a huge amount of space. THIS IS IT! I checked the measurements and saw that it should fit under my cross bed delta tool box. I ordered the tank and install kit which is a bit pricey but well worth it in the long run. I got the tank and the measurements listed didn't add in the hieght of the vents and pick-ups on the top of the tank. With a bit of work and a trip to the hardware store to get the vent shorter by using and elbow I got it to fit under the box and its perfect because it really doesn't take any more floor space I lost with the tool box originally. I wish the tank was availible with black powder coat to match the tool box but a rattle can will fix that.
February 7, 2010
37 gallon diesel tank
I ordered this diesel tank along with the fill kit for my 2007 Dura Max. I pull a 38' fifth wheel, so I needed to extend my traveling distance between fill ups. This 37 gallons auxillary tank along with my trucks 26 gallon tank gives us all the fuel we need before we want too make a pit stop. This is an excellent buildt low profile tank and it looks great too ! The fuel guage on the tank is an added feature I love, If you watch the guage, you won't spill any fuel.
I am sure glad that I didn't go larger because of the added fuel weight. It was very, easy to install, it works great and looks like it belongs in my truck. I recommend this tank !
November 4, 2009
aux diesel tank
my son and I installed tank on 2005 Chevy 2500hd Duramax in about 2 hrs. Very easy. Would like electric tranfer switch.
November 2, 2009
Fuel tank makes travel a pleasure
I have a 2006 short bed Duramax, I don't know why GM put a 25 gal fuel tank in this truck. If the engineers can put that much engine in that small of a space they could have added an extra 9 gallons of fuel like they did in the long bed.
25 gal would be okay if you were just using the truck for normal driving, but when you add a toyhauler your millage drops to about half. When I go camping and leave from phoenix to go to the mountains I would need to fill up before going into the back country to assure that I could get back out to civilization, this always gave me an uneasy feeling.
I have a hard tonneau cover so I can't use a tank that goes over the top of the side of the truck, and using a tall tank robs me of usable space.
This tank is great I can pull the cover off and park the front end of a quad on the tank, so I don't lose much space. The aux line that feeds into the main filler neck works great. I added a manual valve to that line and keep it shut off until I need fuel when get to where I am going or to about 1/4 tank and I then open the valve up and it starts filling the tank.
The only thing that is bad, is the computer on the truck, it does not like the fuel gauge going up, consequently if it gets close to full, the fuel gauge goes to E and gives you yellow light. Just stop the truck and take a break, the computer will reset itself after you restart the truck after a bit. If you leave your valve open it will not over fill the tank if you use the the filler kit they have listed as a option.
I don't drive my truck much during the week, so I can pick the time and the place to fill up. Prices, location, and time are at my disposal not when I need them, this saves me money. I just got back from Vegas, I filled up here and still had 3/4 of a tank upon return. I am glad I purchased this tank and would highly recommend it to anyone that pulls a trailer.
July 21, 2009