Anyone here used diesel additives to clean up deposits from the injectors? My Punto 90 has done about 20k km and I'd like to give her a preventative sort of dose of a diesel injector cleaner. I've come across conflicting reports about the use of diesel additives. The Fiat India site makes no mention of it, I checked the OM and found nothing there either. The Tata motors site mentions System D, Bardahl and another brand, but specifies that these are not for use in Fiat or DICOR engines. The only brand I found in Hyderabad is made by an American company called ABRO, it cost Rs. 190/- for a 350ml bottle, which is to be emptied into a full tank of diesel and driven until the fuel is almost used up before filling in some more. I bought a bottle but I'm holding back on using it until I get some sort of confirmation. Please chip in with your inputs!