Have had this coach since just under 13K, now a still low miles for age 43K miles.
I have started to notice a puff of black smoke, when taking off form a start. Not always.
Seems to me to me it happens when coming to a stop after coming down a hill, or in town traffic, with Jake Compression braking assist helping prior to the stop.
The only other thing a bit different, in the last 5K miles, is that I had the ECM refreshed to 400 from 370. Timing is about the same, but it also could be a coincidence.
Am monitoring oil levels more closely (Used to just check it every few weeks, as it always stays the same.)
Wondering if I have ring blow by? Or, a seal going out on the turbo? Or, am I seeing normal behavior? (Never notice it in any other gear shift. Just from when I'm taking off after sitting at a stop.)
Sure not looking for something to worry about. But, also don't mind checking things out that this brain trust recommends I look at