There is a very lengthy thread about this.
Iirc, there is something longwinded and unexpected, some chain of things which, iirc, results in oil being drawn into the induction, being burned, then creating too high a concentration of particulates for the dpf to cope with, thus is keeps clogging, which then can burn more oil due to high temps from regen. Again, as much as I can recall...
Also, if you are using a C spec oil instead ofbthe A/B spec, this can, conversely to apparent logic, cause dpf to require regen more often as the saps substitutes burn more readily thus using oil two-fold. This is a very recent discovery and is little known.
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