J&R wrote: Actually I beleive particulate filters started with the 2008 model year. That is why we ordered our 06 pre emission engine. Had enough with our 03 trucks with EGR valves and 06 DPF exhaust systems!
I, too, wanted to get an '07 pre DPF unit but we couldn't find one in our area available with the floor plan that we wanted, colors, etc. So, we ordered a new '08 from the factory with the DPF in January '07 with delivery on April 10th, '07.
So far, it has not been an issue at all and I hope it stays that way. I'm glad the process works to keep the air clean as we have NO smoke exiting the tailpipe, even under load.
Now, if we want a brand new unit, we have to worry with the urea fuel or buy a Navistar engine with that new fangled technology.
It makes our unit seem like a non issue. LOL!
MM.
Mr.Mark
2008 Monaco Dynasty, 42.2 ft., 4 slides, 425 hp clean-air Cummins diesel
2013 Honda CR-V EXL, AWD, w/Nav, SMI Air Force One vacuum-assisted braking
Here is a good explanation of DPF from the Tiffin website: With the introduction of the new "ultra low sulfur diesel fuels" and lower emissions "After treatment" systems on diesel powered products, conversations about "idle time" now may swirl around how long to allow units to idle… or not idle!
Starting with the 2008 model year, some diesel chassis units use a special system specifically designed to lower emissions. Part of this system is a "DPF", or "Diesel Particulate Filter" built into the exhaust stream, which catches diesel soot. Over time this material builds up, and the filter must be cleaned. This is accomplished automatically by a system called "Regeneration", which essentially is a process of heating the filter until these materials are turned into carbon dioxide. In normal use (when traveling, for example) the exhaust will build sufficient heat to allow this process to occur as needed.
Extensive idling, however, can cause considerable build up of materials on the DPF, and can cause potential running problems with the unit. Units equipped with this system will have a "DPF" light on their dash warning cluster that will illuminate when the DPF needs regeneration. The cure is simple; take the unit out and drive it. Usually 20 - 30 minutes of highway driving will take care of the regeneration need.
So what does all this mean? Basically, the chassis and engine manufacturers recommend limiting idle time. Most units will be able to idle between 4-6 hours before regeneration is required, but as previously stated, if the "DPF" light comes on, it's time to take the unit for a ride to regenerate the system. The estimated time between regeneration cycles is usually over 100 hours in normal use, but keep in mind this is NOT idling time, and it will all certainly be dictated by how the unit is driven and used. Regeneration will not occur while idling, or often will not occur at speeds below 25 mph.
One other condition to be aware of is if the "High Exhaust Temperature" light comes on, it is indicating that the system has regenerated, and the exhaust components and gases are extremely hot. Use caution not to park the unit where the exhaust system can come in contact with flammable materials, or where the exhaust gases may melt or ignite anything
DEF is the required fluid carried by diesels after 2010 to comply with new EPA standards. Usually a 45 gal tank injected into the cylinders. DEF costs from 2.85 to $4 a gallon and will avg about 400 mpg.
Cummins has raised the advance on their engines because of DEF so overall mpg is up. A recent 1000 mile trip with my 2011 Entegra netted 10.4 mpg, @ 60 mph, 40k#, hills and flat towing a 4,800# toad.
At first I was a skeptic, now I'm a believer.
On the dash there is a DEF christmas tree displaying the tank qty. A limp home program is inherent to the system if you run out. DEF pumps are available at most if not all the major truck fueling centers, Pilot etc.
There are other systems out there to comply with EPA.
mccsix wrote: DEF is the required fluid carried by diesels after 2010 to comply with new EPA standards. Usually a 45 gal tank injected into the cylinders. DEF costs from 2.85 to $4 a gallon and will avg about 400 mpg.
Cummins has raised the advance on their engines because of DEF so overall mpg is up. A recent 1000 mile trip with my 2011 Entegra netted 10.4 mpg, @ 60 mph, 40k#, hills and flat towing a 4,800# toad.
At first I was a skeptic, now I'm a believer.
On the dash there is a DEF christmas tree displaying the tank qty. A limp home program is inherent to the system if you run out. DEF pumps are available at most if not all the major truck fueling centers, Pilot etc.
There are other systems out there to comply with EPA.
mccsix wrote: DEF is the required fluid carried by diesels after 2010 to comply with new EPA standards. Usually a 45 gal tank injected into the cylinders. DEF costs from 2.85 to $4 a gallon and will avg about 400 mpg.
Cummins has raised the advance on their engines because of DEF so overall mpg is up. A recent 1000 mile trip with my 2011 Entegra netted 10.4 mpg, @ 60 mph, 40k#, hills and flat towing a 4,800# toad.
At first I was a skeptic, now I'm a believer.
On the dash there is a DEF christmas tree displaying the tank qty. A limp home program is inherent to the system if you run out. DEF pumps are available at most if not all the major truck fueling centers, Pilot etc.
There are other systems out there to comply with EPA.
I know of a few 450HP cummins DEF 40+ diesel pushers owners and NO one get,s anyhwere near 10.4.MPG
mccsix wrote: DEF is the required fluid carried by diesels after 2010 to comply with new EPA standards. Usually a 45 gal tank injected into the cylinders. DEF costs from 2.85 to $4 a gallon and will avg about 400 mpg.
Cummins has raised the advance on their engines because of DEF so overall mpg is up. A recent 1000 mile trip with my 2011 Entegra netted 10.4 mpg, @ 60 mph, 40k#, hills and flat towing a 4,800# toad.
At first I was a skeptic, now I'm a believer.
On the dash there is a DEF christmas tree displaying the tank qty. A limp home program is inherent to the system if you run out. DEF pumps are available at most if not all the major truck fueling centers, Pilot etc.
There are other systems out there to comply with EPA.
What is DEF??
DesertYeti, DEF is Diesel Exhaust Fluid as explained above. There is a separate tank for this fluid and from my understanding, the DEF fluid is sprayed at some point during the exhaust process to eliminate exhaust pollution.
The new Cummins diesel engines use DEF, the new Navistar diesel engines do not.
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