when driving out and about in my zvh i noticed that occassionally at 3.5krpm i was getting a lot of smoke out of the rear of the car, so i thought turbo and pulled off the throttle.
anyhow i was on a round trip of 200 miles so carried on as the smoke cleared up.
however again it happened on the way back, infact happened twice and even when on boost fully it didn't smoke as such.
when i got home i noticed the ulkhad covered in oil and breather filter was spitting oil out.
it's a GRS breather pot, fed from both ports in rocker cover (burton power alloy one) and to the block breather in the rear.
why is this sometimes happening and why all of a sudden when a couple of weeks back going to and from FITP i had no smoke issues.
i'm pretty sure the smoke was the oil running down bulkhead onto exhaust though.

any ideas welcome

sean