PowerStrokeNation : Ford Powerstroke Diesel Forum - View Single Post - Whats the deal with the Diesel fluid ?
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post #8 of (permalink) Old 01-16-2011, 06:31 AM
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Re: Whats the deal with the Diesel fluid ?

Originally Posted by Wheels11 View Post
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.
That is what I ment by it

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