Hi all and glad to be part of the forum! A friend has a 307sw with a 1.6 diesel engine. The car lost power and ground to a halt shortly after the oil light came on!! On closer examination the oil filter was solid with black sludge blocking circulation of oil. Apparently it was serviced 15000 miles ago. Has any one experienced this before as before I start stripping and re building I need to know why the filter has blocked up. Many Thanks, Stuart.