Why do some 05'S get good milage THERE MUST BE A PROBLEM!

[kernen]

2004. 5 3,73 4x4 auto crew w/18-037-04, 20. 8 miles per gallon 147 mile trip flatland , no headwind. 60mph max, use cruise, hand calc. This is not normal driving style, but shows what is possible.

 

[Larv]

Beginning with the 04. 5 "600" mdl they now meet the Federal emission standards which means the catalytic converter and probably a few other things that eat into our mileage a little. Any comments on what CTD did to meet those standards??

Larv

 

[EBottema]

To meet the new emission standards-

Catalytic Converter- Prob much better at cleaning up than the one the 12v's used

Dual squirt injection process below 65 mph(?)---Allows it to quiet the engine and burn more fuel- however, waste of fuel

Triple injection above 65mph(?)---same as above but wastes even more fuel



I think but cannot say for sure that the 04. 5 do not have a downdraft tube. Meaning closed crankcase. Closed crankcase increase pressure putting more wear and tear on the engine.



I'm sure that the common rail injection is more of a precision process also.

2008- serin canisters and water cooled EGR???? HAHA the 2008 engine is going to be sooooo worthless. Think this emission stuff is bad right now, just wait till 2008!

 

[john3976]

I just drove about 558 miles and averaged right at 21 MPG running expressway at 75 MPH.



Pretty good if you ask me, I love this Diesel truck.