RAM 1500 EcoDiesel sets new record for MPG

N-Trouble wrote:

ScottG wrote:

N-Trouble wrote:
Real world numbers I suspect will be much less especially if people use these as grocery getters for short around town trips. Modern diesel DPF systems don't work well under these conditions and will only lead to more frequent and longer regen cycles hurting mileage.

Just wait til they get released and all the people calling foul when they find their mileage numbers are no where near EPA figures.

Actually the very newest diesels don't have problems with short trips as much as those just a couple of years ago. The use of Urea drastically cut the need for regens.

Are you basing this on first hand knowledge, or something you read in a magazine???
I have a 2012 Duramax that uses DEF and can tell you the emissions systems on these trucks don't like short trips. Its no different than my cousins 2009 Duramax minus DEF. There are lots of 3/4 ton diesel owners whos rigs use DEF that will tell you exactly the same thing. WHile these sytems work well when the truck is being worked carrying heavy loads or used for long highway trips, short around town trips/commutes are not where they shine. Mileage goes down the tube in a hurry. I expect the Ecodiesel will be no different in this regard.

I base this of technical articles and real world experiences - Duramax's aside.
This is for Cummins engines. Maybe I wrongly assumed DM's would be the same.
You say "lots of owners.." - please quantify that because I know "lots of diesel owners" (and fleets) and I don't hear that.