PowerStrokeNation : Ford Powerstroke Diesel Forum - View Single Post - Whats the deal with the Diesel fluid ?
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post #7 of (permalink) Old 01-16-2011, 05:51 AM
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Join Date: Nov 2010
Location: Dallas, TX
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Re: Whats the deal with the Diesel fluid ?

Originally Posted by JimTJr View Post
I don't think it increases MPG,,, just cleans the NOX out of the exhaust,,,,
It decreases the amount of EGR required to obtain the lower NOX levels, which results in better mpgs. But yes, DEF in itself does not improve mileage.

'11 F250 Crew Cab Short Bed XLT FX4 Midnight Black
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