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Old 10-03-2013, 11:38 AM   #1
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2010 22' Interstate
Vincennes , Indiana
Join Date: Sep 2012
Posts: 116

I have a 2010 Interstate 3500 with a Mercedes Diesel engine. I took it in for the first service since I bought it and asked how much DEF was required. I was told this unit does not have a DEF tank.

Does it or should it?

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Old 10-03-2013, 12:05 PM   #2
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2007 30' Classic
Oswego , Illinois
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The EPA law relative to Def went into effect in January 2011. So for most manufacturers, it was mid 2011 model year when def was added to the vehicles.


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Old 10-03-2013, 12:12 PM   #3
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From All Over , More Than Anywhere Else
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Unless it has the Blue-Tec badge on the side, your Interstate does not need DEF.
WBCCI #1105

My Google-Fu is strong today.
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Old 10-03-2013, 11:16 PM   #4
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2010 22' Interstate
Anchorage , Alaska
Join Date: Mar 2010
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Your 2010 Interstate was probably built on a 2008 or 2009 Sprinter chassis. The BlueTec feature first appeared on MY 2010 Sprinters.
- wayne
2010 Interstate 3500 Twin Bed
(2008 Freightliner CRD Sprinter)
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Old 10-03-2013, 11:34 PM   #5
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Overland Park , Kansas
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It's not unusual for Airstream to use up last year's chassis on a new model year. For example, my 2011 Interstate has a 2010 chassis.
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
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