They may have helped 20-30 years ago when carburetors and breaker point ignition systems were common. As for testing today, I agree, it's gone from air cleaning to money making. It's another form of "taxation".
My truck with DEF gets 8 to 9. 5 mpg loaded (my 02 gets 10 mpg with same trailer), and has 190 ft-lbs tq less than the pickups. I'm not convinced that a move to DEF in the pickups will be of any benefit.
Also, my exhaust system now costs twice as much to repair than a pickup and has more things to go wrong. It has already been in for recall work on DEF system.
Same to worse mpg than pickups with less power and more expensive repairs; and the hunt for DEF to refill the tank every couple of months... I'd take a non DEF truck any day.
Also, while DEF is becoming more common, it's still hard to find. In a year of ownership I've yet to find a pump for DEF at a gas station, and I live 5 miles from the interstate. I have to go buy it two gallons at a time for $7 a gallon.
I thought there would be a benefit in running DEF. The only perk so far is the regular oil change intervals. [/QUOTE]
This will save some coin.
No problems finding DEF around my parts, . . and I'm in Ca!
2011 4500 4wd C&C... ... with a dually bed mounted.
We just completed a trip with 5k lbs worth of Camper and crap... .
Bout 10-11 Mpg... ..... used 65% of a full 6 gallon tank of fluid.
Real numbers ... ... . no speculation.
Love the power and the Engine brake with Auto trans.....
I do feel a lil better about not dumping "coal" everytime I leave a stop light or romp on it like the 2001 dually did... .
When I first bought the truck it used a lot more DEF. . but as it "breaks in?"... it is using less... .
Wanted to chime in. Thanks... .
2011 4500 4wd C&C... ... with a dually bed mounted.
We just completed a trip with 5k lbs worth of Camper and crap... .
Bout 10-11 Mpg... ..... used 65% of a full 6 gallon tank of fluid.
Real numbers ... ... . no speculation.
Love the power and the Engine brake with Auto trans.....
I do feel a lil better about not dumping "coal" everytime I leave a stop light or romp on it like the 2001 dually did... .
When I first bought the truck it used a lot more DEF. . but as it "breaks in?"... it is using less... .
Wanted to chime in. Thanks... .
I never lost any sleep over it. It's not like your truck was belching like the comp trucks do.
Although I'm in support of the use of DEF (only because I think the current 6. 7 system is abosolutely stupid) I think the diesel required emissions in a whole are stupid.
How can a emissions strapped diesel that uses more fuel and more oil be better for the environment? After all, that's what EPA is claiming.
Before I converted my 5. 9 2500 to a DRW, I could easily get between 18/19 mpg at 2000 rpm or less. I drive about 25k a year so that's almost 1400 gallons of diesel and about 3. 5 oil changes per year.
From what I gather on the 6. 7, 14 mpg is about average and the oil needs to be changed way before 7k. So if I drive 25k, that's almost 1800 gallons of diesel and I'm guessing about 5/6 oil changes per year.
my 2010 avg 15 mpg, but the speeds are 75 mph out here (Nevada). Since I live outside the city limits, It is a drive of 30-60 miles one way to get to town. I have never seen my oil change light go on. I still change it at 5-7k miles.
I attribute it to all the highway miles. When the speed limit was 65 I would avg 16 mpg.
My friends identical truck (even down to tire size) just completed a trip from Chicago to Niagra falls. he avg 17. 4 mpg. these are both mega cab 4x4 3500 srw. but the speed limit avg is 55-65 mph.
If no other changes and the urea helps mileage I would be happy. But I am not complaining. my 04. 5 got the same mileage.
Well, after reading the latest TDR it does appear that the Ram will be using the SCR system starting in Jan 2013. If that is the case I will be waiting a little while longer to get the SCR system. I know a lot of people don't want the urea tank and something else to have to fill, but I think it will be the best alternative to achieve better fuel economy, and hopefully less regenerations and less fuel dilution as well. I just hope that Dodge puts the tank in a better place than GM did with that ugly thing hanging under the truck. Can't believe they did that. So, I'm looking forward to that and will buy the Dodge Cummins if that happens as planed.![]()
I just attended the Auto show in Salt Lake City, and asked the question, "WHEN IS DODGE GOING TO UTILIZE DEF? The answer I received, was that Dodge/Cummins was good till the 2014 mY Pickup Trucks.![]()