Join Date: Feb 2009
Location: San Angelo, Texas!
Re: Whats the deal with the Diesel fluid ?
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
2002 f-250 7.3 ex cab automatic, 4'' turbo back magnaflow exhaust. tonneau cover. SOLD
2011 f-250 6.7 Lariat fx4 with lots of extras!!Sold
2011 Screw Ecoboost 4x4 with ALL the options
Excuses are like butts, everybody got one and they all stink!