The oil drain plug has been leaking since the first service at 1000km. Local dealer has replaced the washer, tried a silicon tape of sorts and recently replaced both the washer and the plug with a new unit. The local tech has just returned from Italy, where he underwent factory training, and mentioned this problem. The response wasn't exactly encouraging, as all the suggestions they made have already been attempted, without success. It's all getting to be a bit of a joke now. Does anyone perhaps have a suggestion to resolve this issue?