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Old 07-14-2016, 05:36 PM   #15
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Mercedes Sprinter chassis. 4.7 gallon tank and advertised at 1720 mpg of DEF. Not knowing if the tank was full initially, that seems fairly accurate. A Light at 1.5 gallons remaining, gives about 1000 miles to find DEF before next warning triggers at about .8 gallons remaining.
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Old 07-15-2016, 09:40 PM   #16
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Any opinions on whether theres any reason to pay more for the Bluedef brand versus some other brands? At least at Walmart the Bluedef is 3x the price of Supertech.

Makes me think about the value of what i flush away every morning.
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Old 07-16-2016, 07:16 AM   #17
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I investigated trying to make my own DEF. The water is deionized and the urea is not a fertilizer. Need special equipment. Using water only will probably ruin the DPF.
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Old 07-16-2016, 11:16 AM   #18
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Quote:
Originally Posted by LittleBeast View Post
Any opinions on whether theres any reason to pay more for the Bluedef brand versus some other brands? At least at Walmart the Bluedef is 3x the price of Supertech...
There's no complicated science or magic behind the production of DEF. So many parts deionized water, so many parts urea. I buy the cheaper brand at Walmart, can't imagine why anyone would pay an extra $4.00 to buy the same quantity, just a different brand, sitting on the same shelf right next to the more convenient blue plastic jugs.
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Old 07-30-2016, 08:42 AM   #19
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At the Freightliner school we picked up a good tip. If you like to carry some extra DEF with you get a 5 gallon water jug (mine is like one of the old Jerry cans but is blue plastic). Then you can fill it up at the pump with the cheaper DEF and not buy the more expensive "boxes" of DEF. Cheap and easy!
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Old 07-30-2016, 08:49 AM   #20
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I read where Cummins says if you run out of DEF it just reduces power a little, like no big deal, and whenever you put some more in it all goes back to normal.
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Old 07-30-2016, 09:31 AM   #21
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DEF fluid cost.. Where cheapest

Quote:
Originally Posted by Safetysteve5 View Post
At the Freightliner school we picked up a good tip. If you like to carry some extra DEF with you get a 5 gallon water jug (mine is like one of the old Jerry cans but is blue plastic). Then you can fill it up at the pump with the cheaper DEF and not buy the more expensive "boxes" of DEF. Cheap and easy!

That certainly would negate the need to pull forward to fill my DEF tank at a truck fueling station after pumping diesel. I wonder however if the water jug would be affected by DEF? It is designed to be safe and stable with water. Is DEF caustic?

DEF comes in plastic jugs...but there are many different kinds of plastic.
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Old 07-30-2016, 10:18 AM   #22
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That certainly would negate the need to pull forward to fill my DEF tank at a truck fueling station after pumping diesel. I wonder however if the water jug would be affected by DEF? It is designed to be safe and stable with water. Is DEF caustic?

DEF comes in plastic jugs...but there are many different kinds of plastic.
DEF is diluted piss...diluted with water.
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Old 07-30-2016, 04:43 PM   #23
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Oh. Guess that this explains why I haven't killed any trees yet 😉
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Old 07-30-2016, 07:10 PM   #24
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Walmart DEF is my preference also. $7.88 for 2.5 gallons. I fill the DEF tank while the DW is putting the groceries away. One stop at Walmart fills all of us up.

I tried the refilling jugs at truck stops...what a hassle and waste of basement space carrying empty jugs. Spend $50,000 for the next larger basement space model RV, then fill it with empty plastic jugs to save 90 cents For 90 cents, I'll let Walmart store it until I need it.
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Old 07-30-2016, 09:11 PM   #25
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Walmart DEF here. $7.88/2.5 gallons. I usually order online when I see it's available as its sometime difficult to find in stock.
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