Sorted mine in end over 131k miles now and still going strong oil has settled down did need egr valve cleaning and then just used forte dpf, cleaner get on motorway and wind up revs 3500/4000 so it gets good n warm will chuck out lotta smoke but that is it burning out crap then just chuck an odd treament in every 3/4 months works for me. Still on original dpf and not had to touch head etc and yes, when it enters dpf cleaning mode it does chuck out smoke when accelerating, but normally nothing. So In my case no doom n gloom, just try cleaning egr valve (but do a good job) use treatment and if its like mine all will be fine. Mine is mostly is used on short runs 6/7 miles to and from work, no motorway driving no high speed work so would expect to clog up more than most. Dont know about wynns I have only used forte dpf cleaner and this works for me hope this helps