go to euro parts pick this up
http://www.eurocarparts.com/ecp/c/Vauxha...&0&cc5_862
add to a full tank of fuel and as said above go for a long drive for about 20mins
then keep the revs over 2000 rpm and stay in 4th for another 30mins motorway driving
then drive back altering the revs from 2000 to 3000 rpm
and all should be good use this stuff about 3 times a year to keep the dpf clean
night time is better when the motorway is clear
http://www.eurocarparts.com/ecp/c/Vauxha...&0&cc5_862
add to a full tank of fuel and as said above go for a long drive for about 20mins
then keep the revs over 2000 rpm and stay in 4th for another 30mins motorway driving
then drive back altering the revs from 2000 to 3000 rpm
and all should be good use this stuff about 3 times a year to keep the dpf clean
night time is better when the motorway is clear