Yeah coking is what i was talking about...
caking is at a wedding when the groom shuves cake in the brides face...
Coking is when the oil turns to curdles and starts becoming a solid matter. Once this has occured its time for a bearing cartridge replacement, In short a re-build.
As for the BOV with the current set of upgrades in actually going back to a plumb back srtup due to fuel consumption and of course legality. I dont want to push it, particually with the next set of upgrades i should not push it too far...