Hi, i am a newbie by the name of finbarr, i am looking for help with my disco cutting out, i run the disco on bio, i have checked all of the usual problems associated with bio at this time of year,i.e. filter/sender unit/bio freezing and it is none of these. i am wondering if it is the filter that is situated close to the drivers side back wheel arch underneath. what is the purpose of this filter,how easy is it to change,what is the part number and what are the symptoms of a disco that needs this filter changed. i would also add that my disco is n reg and an automatic version also i dont run on b100 during these sort of weather conditions.hope some of you members can assist me with knowledge and advice.apologies if i have posted in the wrong section but i am new to the site. Cheers Finbarr.