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I know on the firetrucks it started in late 2008?...? as our 2007 Ladder does not have DEF and everything since then does..
The 6.4 only uses the DPF (Diesel Particulate Filter), the DEF (Diesel Exhaust Fluid) also known as SCR (Selective Catalyst Reduction) did not show up until the 6.7L Ford built engine.
ok thanks... I thought if you had DPF you had to have DEF.... I looked at a 2010 the other day and could not figure out where the DEF fill cap was.... LOL
ok thanks... I thought if you had DPF you had to have DEF.... I looked at a 2010 the other day and could not figure out where the DEF fill cap was.... LOL
The DPF is nothing more than a filter to trap soot. EGR (Exhaust Gas Recerculation) is used to control the NOx emissions ( Nitrous Oxide). When the filter needs cleaning since it will plug up with soot then fuel is dumped in engine to be pushed out into exhaust to create fire/heat to burn soot out.
The newer setup,with DEF still has a DPF filter along with EGR in the engine but since the tier 4 emissions the 6.7 complies with is way stricter than the tier 3 of the era of the Navistar built 6.4 it takes more stuff to pass emissions testing. The DEF is sprayed into exhaust to have a chemical reaction with the NOx emissions and it changes it to straight nitrogen and water vapor. There is also a catilyst in system to aid with this chemical reaction. Lots of stuff going on these newer Diesel engines all in the name of reduced emissions. These are also the parts that tend to fail giving you greif and tend to be expensive to repair but all manufactures re in the same boat.
Just don't put it in the fuel tank on the 6.4, like I did... I was led to believe that it needed it in the tank since it didn't have a DEF tank yet. Of course, it crystalized, and destroyed the pumps, injectors, and everything else in the fuel system. Thank the gods for extended warranties (Safeco covered my mistake, comprehension and collision).
Just don't put it in the fuel tank on the 6.4, like I did... I was led to believe that it needed it in the tank since it didn't have a DEF tank yet. Of course, it crystalized, and destroyed the pumps, injectors, and everything else in the fuel system. Thank the gods for extended warranties (Safeco covered my mistake, comprehension and collision).
Lesson: Don't put DEF in the 6.4
Man...someone filled you full of some crap for you to do that. Also, I'm quite surprised that was covered...ESPECIALLY with a 3rd party extended warranty.
Glad it worked out though for sure. That would have been a hell of a repair bill if it came out of your pocket.
02-08-2015, 10:22 PM
Does a 2010 F250 6.4L use DEF like a 2011 6.7L does?
