DEF jams (storage) couldnt resist
Rather Be Floatin
Joined: Oct 2005
Posts: 2,468
Likes: 0
From: Marble Falls, Tx.
With as much as they hold and the amount of miles between fillups I have never even thought about carrying around some extra. I really dont seen anywhere inside the cab where some could be stashed. Maybe wrap a jug in an old towel/blanket and keep it in the bed?
Mountain Pass
Joined: Sep 2005
Posts: 171
Likes: 0
I can't see the point in carrying extra DEF, unless you are on one long *** towing trip and are planning on cutting it that tight between fills. If that were the case I could probably find some where to keep it in the trailer.
Cargo Master
Joined: Jul 2008
Posts: 2,571
Likes: 55
I have nearly 15,000 miles on my truck now and I have used 3x 2.5 gallon cans (7.5 gallons if I did my arithmetic correctly). That would be 2.5 gallons every 5,000 miles.
I fill my tank up when I see the 1/2 tank level (have to go back through the information screen, I check it a couple times a week out of habit).
When I went on my long trip this past summer I did carry a 2.5 gallon jug with me. I had never filled up the tank, had a few thousand miles on the truck and had not filled it up yet so I figured I'd take a can just in case. At some point in the trip my DEF info tab showed 1/2 tank so I went ahead and put the can in, not needed but I topped it off anyway. That's what I continue to do. $12 or so for a can isn't much spread over 5000 miles. That's 8 tenths of a percent DEF usage compared to fuel at 17mpg, or (at 3.80/gal diesel) roughly a penny on the dollar for DEF cost compared to fuel.
No complaints here. I can spare an extra cent per gallon of fuel
The other way around would be no DEF and less fuel mileage, I think the SCR systems using DEF pays for the DEF and then some.
I fill my tank up when I see the 1/2 tank level (have to go back through the information screen, I check it a couple times a week out of habit).
When I went on my long trip this past summer I did carry a 2.5 gallon jug with me. I had never filled up the tank, had a few thousand miles on the truck and had not filled it up yet so I figured I'd take a can just in case. At some point in the trip my DEF info tab showed 1/2 tank so I went ahead and put the can in, not needed but I topped it off anyway. That's what I continue to do. $12 or so for a can isn't much spread over 5000 miles. That's 8 tenths of a percent DEF usage compared to fuel at 17mpg, or (at 3.80/gal diesel) roughly a penny on the dollar for DEF cost compared to fuel.
No complaints here. I can spare an extra cent per gallon of fuel
The other way around would be no DEF and less fuel mileage, I think the SCR systems using DEF pays for the DEF and then some.
Junior User
Joined: Jan 2011
Posts: 60
Likes: 0
No need to around the home area. On my 3500 mile trip last fall hunting took and extra 2 1/2 gal jug in the basement of the 5th. wheel. Towing I seem to get a little under a 1000 miles a gallon.
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Senior User
Joined: Feb 2007
Posts: 474
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From: Colorado
Thanks....good info and it was good to hear some real world experiance with how long the stuff lasts. I did read a couple of posts elsewhere some feeling they needed to carry spare but remebering a wally world is always close by anywhere and not letting it go past 1/2 empty sounds like a plan.
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