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Originally Posted by HighlandPete

If you are sensitive to engine note/feel you may notice a gruff almost offbeat soundtrack.

The best advice is to continue until the regen' is complete. Regenerations can be interrupted and continue the next time the parameters are met. I've personally witnessed stopping mid regeneration, knowing I'm running again after a few minutes. On restart, within about half a mile the regen' will trigger again and go on to completion.

Idling or incomplete regenerations are where the issues come in. Idling is a cause of oil dilution during a regen', you don't want that too often or oil dilution tolerances will be overshot, and/or oil level will rise.

The extra heat for an active regeneration is obtained by an extra post injection phase, (heats the exhaust stream), so a working engine with load is better than an idling engine, where this extra fuel is not burned efficiently and can (and does) wash past the bores into the sump.

Talking with my local recovery guy, he has loads of issues with messed DPF regenerations. Worst case examples include oil dilution to the point of a break down in lubrication and con rods through the side of the engine. Runaway engine destruction (combustion fed from the diesel in the sump oil) or draining excess volumes of diluted oil. He told me one of the worst oil dilutions was over 100% extra in the sump, 'oil' now over 50% diesel.

HighlandPete

Wow that's a lot of diesel in the wrong place.

As I mentioned earlier one of main problems I know about is people setting fire to car or surrounding area.

Mr n mrs smith go to car boot sale / camp site etc.

Long trip - car does a regen towards end, they park up in longish grass ......