A couple of years ago my mechanic mentioned that if the DPF gets blocked it could be damaging . I was about to make 450mile trip south so , I decided to put some Forte DPF cleaner in the tank . A couple of days of town driving later and for the first time I got the DPF warning light on Continue Driving . After a few miles down the motorway , warning off. .

However , after that it would come on now and again . About 5 months ago I got the Mandatory warning to drive and then it cleared after ab