I'm making a start on doing bits and pieces on my H reg 110 Defender and I've been noticing on the rocker cover on the 200tdi there are oil leaks at the 3 bolts along the top (see photos)

I don't believe it to be huge amounts of oil but engines are a complete mystery to me....is this just a matter of replacing a washer that or the bolt becasue of simple old age or is it a sign that something else is about to go bang???

I've given the bolts a little tighten up, about a quarter turn, in case it was case of just being old and a little loose after 20+ years of service.

Any help more than welcome as it's increasing my knowledge and helping me do more of my work on the old girl.

Thats a major problem..i would not drive the vehicle in that condition.

just replace washers err663 x 3