Oil on top of engine
 

Ok so replaced the oil trap box and now there is a vacuum when the throttle is pressed, cleaned all the oil off the top of the engine where the spark plug covers are. checked today and there is fresh oil again. I have just ordered a new oil filler seal, is there anything else I should be looking for.

Thanks Dean

Try the seal under the oil cap itself.

Yep that's what I've ordered.

Have you got a part number for that oil filler seal Dean?
I think I need one of those, I get oil on the top of my T4 engine also.
For me it can only be that after doing the head gasket and checking things around that area.
Cheers.

Ordered it on eBay. It's not genuine Volvo but should be cheap enough of you have a Volvo dealer close by.