Re: Whats the deal with the Diesel fluid ?
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