Has anyone had this "diesel induction service" done at their dealer? (no, not injectors) This involves pumping a solvent though the EGR system and turbo. I had it done to my truck @ 134000km and it did make a difference in mileage. I have seen videos on Youtube of it being done to European diesels and BG also has a few ads about it. I can't find much info about it being done to Cummins engines. Thoughts anyone?