In the interest of accuracy
The 45 minute regen is when the DPF is full, which should be an extreme case.
Brad
After discussing the situation where the DPF indicates 80%,... the statement is that "as little as" 45 min. at "highway speeds"(no specific RPM given on this, p. 417, of the manual), ... can "restore" the normal condition.
"as LITTLE as"? ... leaving open "or as MUCH as ???" , especially when the filter is more than 80% "full"?
Only after the above words tying the 45 minutes to the 80% state, does the manual go on to discuss other % indications(90, 99).
There is no mention on pages 416 or 417 of any pre-regen "additional" warm up period of another 45 mins(or whatever), as reportedly suggested to one poster by his service dealer.
No discussion on these pages (the only ones I have copies of) of how one knows when the process is complete, and normality "restored".
I. e. , how do you know when you have driven far/fast enough?
Also not discussed on those pages is anything about brake-application aborting the process, requiring beginning all over again. [from TConnolly, post 55 in "Am I the only one... " thread:
[The diesel mechanic] "... brought to my attention that the regeneration process although it takes 45 minutes needs a minimum of 45 minutes to begin its cycle, the vehicle needs to be under a load running at about 2000 RPMs to complete the regeneration if you step on the brake the process aborts and you must begin again. "]
This "requirement" seems a real loser --"I'm at 44mins. /50 miles of unwanted "maintenance" driving, with more to go after I head back, and this jerk just pulled right in front of me. [Screech!] Uh, oh,... gotta start all over!" [Have to do the regen one-way,... can't figure out how/where to get off the expressway and head back from halfway without using my brakes ;-) ]
C'mon D/C!
Can someone with a manual please look-for/address these issues?
Thanks,