I think that was done two weeks ago the fuel filter was replaced as well he said he put the adative in the fuel filter apparently its whats done when the emissions are to high to clean the injectors and pump.
The treatmeant made a difference for a short time also the eml light flashes when you take your foot off the throttle and the mpg is horendous only getting 38mpg on a moterway run 
I get around 42mpg with roughly 30% town and 70% A roads. M/way at 70-75mph gives around 48mpg. Does it happen less once fully warmed up. My EML did that with my original ECU. I know it's not the pump as I've recently had it completely overhauled by a mate that's been a Bosch techie for almost 30 years. Currently using a spare as I fried the original one when a booster starter lead slipped onto it. Not doing it now. I'll ask whether it's ECU related when I get my BBQ'd ECU repaired.
On the Diesel Magic in the fuel filter issue, needing two or three doses isn't unusual.
