Originally Posted by 2008Wildcat
Don't forget that there 2 versions of what is being talked about here.....
The OP is talking motorhome diesel engines, (it is posted in the MOTORHOME forum) which are different from the diesels in our pick up trucks. The current Cummins motor in pickups is already compliant with the 2010 standards, WITHOUT a urea tank. The Duramax and Ford diesels will use urea in the 2010 pickup engines.
I am not up to date on the motorhome diesels, but I did hear that CAT was backing out of them.
the 6.4 cummins by virture of its egr is 2010 legal
however, dont look for it to be around in that config very long
egr has been problematic for a all three and thats the other reason they are going with urea.
the urea should by design regain some mpg and not reduce HP
fords new pickup engine is stated as going 7500 miles from one urea tank fill
i would assume all will be close to that.
cat...is a killer they gave up the ghost for the 2010 over the road engine....however i would expect them to be back, to big of a market to not re-look at the engineering