Thank you, however, how would this affect the warranty?Ti Rich wrote: ↑Tue Apr 14, 2020 12:42 pm When I picked up my new to me S D a few weeks ago it was hesitant pulling away. I used some Archoil AR6400-D MAX Professional Diesel Engine treatment as I have on all my diesels, and sure enough, the hesitancy is gone. I actually think it now picks up better than my BMW 435d did. Might be worth a try.
I also use the Archoil fuel additive (Archoil AR6900-D Max) with every tank and can't recommend the stuff enough. The engine runs so quietly you can not tell it's a diesel until it runs out of revs at 5k!
The car has always had BP Ultra Diesel or the equivalent from other suppliers (not Tesco and the like).