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Old 06-25-2017, 02:23 PM   #1
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Diesel Exhaust Fluid

Does any one purchase Def at a truckstop, with the DEF and the diesel fuel sharing the same hose? Are you getting any diesel fuel in the DEF tank? Could this have any bad effects? I am new to DEF,just concerned.

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Old 06-25-2017, 02:33 PM   #2
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I've not seen one using the same hose.

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Old 06-25-2017, 02:39 PM   #3
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The DEF and diesel are two different pumps and two different hoses.
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Old 06-25-2017, 03:10 PM   #4
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The DEF hose is usually to the left of the Diesel hose and is behind a hatchlike plate. For sure it is not the same hose.
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Old 06-25-2017, 03:38 PM   #5
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As stated earlier the diesel and DEF are separate nozzle. The DEF nozzle is either to the right of the diesel pump(most common) or to to left. Because DEF can freeze the nozzle is most always behind a black cover about 10 inches wide.
Also, the the DEF nozzle is much smaller than the diesel. Typically when filling at a truck stop you will select "tractor" fuel and then it asks if you want DEF. if you select tractor fuel AND def you fill the diesel first. Shut down the pump, move the coach forward to the DEF tank and then proceed to retrieve the DEF nozzle from behind the black cover.
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diesel, fluid

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