Ht leads oil leaking

[Paul666]

Hi when im driving and say just feathering accelrator to mainten speed my car is pinking sounds like metal rattling nxt to each ova after a quick glance i noticed my bottom ht lead a DIS end has oil all round it! i cant imagine why it would be coming from there but without looking any further im assuming this may have sumat 2 do with the pinking (messing up the air to fuel mix) it only happens when engine is hot not got any overheating problems etc! any1 had any similar problems! please help. thanks:)