I made the same rookie mistake on xmas night when filling up to go away the next day. I unbolted the main tank and syphoned out as much fuel as I could. I reckon there was still 15 - 20 ltrs still in it that I couldn't get out. I then removed my fuel filter and pumped all remaining fuel out of my lines. Bolted tank back up, replaced fuel filter and filled with diesel. Started car and it ran like crap for about 10-15 seconds until the diesel pumped through. It has been running fine ever since.
Hopefully you have the same luck but the only difference is I didn't drive mine till it stopped.
Mine is 2008 as well