I have a well used 150,000 miles Fiat ducato 2,5 Tdi cat 1996 with a small slow oil leak, it appears to come from behind and high up by a sheet metal plate between the engine block and clutch housing and drips out along it and mainly from the bottom making a mess underneath especially when driving,then basically stopping after engine is off. The problem has been going for a year/3000 miles gradually getting worse, any ideas gratefully received.:Sad: