I have an 8-speed automatic Ford Transit Connect. A NOX sensor recently failed and resulted in diesel finding its way into the oil because a regeneration was being called for but not triggered. I contacted Ford's customer care centre who advised me to contact a technician at a Ford main dealer. I asked the question about how an auto regen was triggered. I was told it needed 2000+ revs for about 20 minutes.
The problem is, being an 8-speed auto, that in order to reach 2000+ revs, I would have to break the speed limit on a motorway because every time the engine gets any where near the 2000 revs it changes up a gear.
There is no mention of this in the vehicle's handbook. Does this suggest there may be problems ahead for drivers of 8-speed auto Fords - and perhaps similarly specced vehicles made by other manufacturers?