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Old 04-16-2016, 10:00 PM   #1
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Diesel Fuel

Running a diesel MH you could pull into any service station
selling diesel fuel.
Question........with all the newer diesel engines requiring DEF,
is it harder to find fuel?
Which stations do you use?
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Old 04-16-2016, 10:05 PM   #2
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DEF goes into a completely separate tank, it doesn't go in the fuel or fuel tank. Just fuel up with normal diesel.
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Old 04-16-2016, 10:38 PM   #3
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Diesel fuel and DEF are different and go to separate tanks on the RV. One can buy DEF via pump dispenser next to the diesel pump at truck stop lanes. Or buy it in containers (typically 2.5 gallons) at truck stops, auto parts stores, and even Walmart.

One problem with buying it in the truck stop lanes is that most RV have the tank on the right side, and the DEF dispenser is only on the left side dispenser of truck lanes...
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Old 04-16-2016, 11:01 PM   #4
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vsheetz said:

"One problem with buying it in the truck stop lanes is that most RV have the tank on the right side, and the DEF dispenser is only on the left side dispenser of truck lanes..."

Kinda makes you wonder if the people who design these RV's ever use them.
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Old 04-17-2016, 03:43 AM   #5
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Quote:
Originally Posted by Arch Hoagland View Post
vsheetz said:

"One problem with buying it in the truck stop lanes is that most RV have the tank on the right side, and the DEF dispenser is only on the left side dispenser of truck lanes..."

Kinda makes you wonder if the people who design these RV's ever use them.

RV's designs are changing as possible to have the DEF fill on the left. I have heard the design disconnect was the RV chassis folks understood/assumed truck lanes would have DEF on both sides - as they do the diesel dispenser. Space on the left side of the RV is at a premium - wet bay, power compartment, etc. And the DEF tank has to be within a few feet of the exhaust precluding it from being at the front of the coach. Hence the DEF tank and fill went on the right side.
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Old 04-17-2016, 03:22 PM   #6
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Buy your DEF at Wal Mart. They recently came out with their own brand, about $4 cheaper than the name brand...has the identical ingredients.
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Old 04-19-2016, 06:57 AM   #7
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Keep in mind that DEF has a shelf life of about a year so you do not want to stock up on it and you do want to buy the freshest you can find. You can go online and find the date formula (they made it so darned complicated). Spouse carries the date formula in his wallet so he can always purchase the freshest DEF. I am sure that truck stops are not an issue for fresh DEF since they have a large customer base.
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Old 04-19-2016, 09:04 PM   #8
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What happens if you drive your DP with an empty DEF tank?
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Old 04-19-2016, 09:10 PM   #9
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Quote:
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What happens if you drive your DP with an empty DEF tank?
Goes into limp mode or shuts down completely.
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Old 04-19-2016, 09:18 PM   #10
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Originally Posted by RV Vagabond View Post
What happens if you drive your DP with an empty DEF tank?
Don't let it get to that point. Refill as soon as you get the warning, engine shutdown from low/no DEF is totally preventable.
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