First I want to mention that I drive a BMW E46 320d, the away hat.Nach the long winter with many short-haul and cold starts have 170000 km I am for the first time for such a product entschieden.Ich have the bottle contents for a full tank (63 liters) verwendet.Die immediate effect after a few km has surprised me a little. Significantly better suit bzw.Beschleunigung and quiet engine running, giving relatively falls and consumption. Everyone should try it yourself min.1mal annually bzw.aller 5000 km or much city traffic. Default by the manufacturer of all 2000 km. But I fill up since only normal diesel and have a better-felt drivability than Ultimate or Exellium, and more expensive it is, therefore, not well. I try out and about 2 other additives report follows.