what year did EGRS , DPF's, DEF etc..show up on DP's

[Txsurfer]

In other words when were the last good non-emission diesel DPs made. I have a 2008 RAM 6.7 with it and I believe it was the first year so I assume a similar time frame for DPs?

[hostage]

haddy1 wrote:
The "serious" stuff started with the 2007 EPA and was changed again in 2010. Most everyone used DEF to meet the 2010 standards. Actually, the 2010 engines get better mileage because they can build them looser.

My 2012 Phaeton gets better mileage than my 2003 DP got, even though it weighs about 7000 pounds more.

really well my 2002 ISC 350 got 8.5;; My current 2008 425ISL gets 7.5 and my friends ISL 450 2013 gets 7.5

Now on fairness these are all 41-43 ft units not 36 ft so much heavier than a 36 ft so its entirely possible to get 1 MPG more on a
lighter 36 ft unit on DEF BUT the cost of def negates any $$ savings fuel mileage wise

[hostage]

haddy1 wrote:
The "serious" stuff started with the 2007 EPA and was changed again in 2010. Most everyone used DEF to meet the 2010 standards. Actually, the 2010 engines get better mileage because they can build them looser.

My 2012 Phaeton gets better mileage than my 2003 DP got, even though it weighs about 7000 pounds more.

that's BS they don't build these engines looser at all;; same bearing clearance same cylinder clearance same ring end gap etc m

[Mile_High]

2011 seemed to be the last Winnies we looked at (freightliner/8.9 ISL) that were free of DEF.

[wildmanbaker]

Thanks, I had a mental of a large amount of engine rattle, a lot of oil consumption, and parts flying everywhere.

[jharrell]

wildmanbaker wrote:
Could you please tell us people that are not up on the current Diesels, what "build them looser" means?

Never heard it called looser, but before DEF they had to use lots of EGR and run them richer to try and keep NOx down.

Once the NOx regs got so tough that the only way to meet them was to use DEF they could then do less EGR and go hotter and leaner getting better power and mileage while putting out 40x less NOx.

[wildmanbaker]

haddy1 wrote:
The "serious" stuff started with the 2007 EPA and was changed again in 2010. Most everyone used DEF to meet the 2010 standards. Actually, the 2010 engines get better mileage because they can build them looser.

My 2012 Phaeton gets better mileage than my 2003 DP got, even though it weighs about 7000 pounds more.

Could you please tell us people that are not up on the current Diesels, what "build them looser" means?

[haddy1]

The "serious" stuff started with the 2007 EPA and was changed again in 2010. Most everyone used DEF to meet the 2010 standards. Actually, the 2010 engines get better mileage because they can build them looser.

My 2012 Phaeton gets better mileage than my 2003 DP got, even though it weighs about 7000 pounds more.

[hostage]

Txsurfer wrote:
In other words when were the last good non-emission diesel DPs made. I have a 2008 RAM 6.7 with it and I believe it was the first year so I assume a similar time frame for DPs?

As far as I know Cummins is 2006 and earlier;; non electronic was late 1997 and earlier

[naturist]

1967 started the Big Downhill Slide, if that's what you want to call it.

Diesels started needing DPFs and DEF with the 2007 MY. Hardly any of that year exist because there was no ultra low sulfur diesel fuel available, needed for both technologies. Both EGRs and crankcase vented to the intake were used long before that -- both my 2001 and 2005 diesels had both.