Originally Posted by Traps90
Ö.The best advice for this engine is do not idle anymore than absolutely necessary and drive it like you stole it, putting around or babying this engine is not good for it.
That is very good advice. Fact is, at less than 60mph I would drop down to 5th gear to keep rpmís up. To do a regen while driving the rpmís need to be above a certain level.
Most of our issues were stopped up exhaust filters and charge air coolers. The latter is caused by the aggressive EGR system Navistar used to pass emissions. We also found that changing the oil at 5,000 miles or less helped to keep the CAC clear.
We do in-fact idle our trucks quite a bit because we run a crane and / or air compressor off the pto. At idle the turbos were slobbering oil into the intake tract. Clean oil went on through the CAC, carboned up dirty oil stopped it up.