Thanks for replies and feedback guys.
Turbomaster1 :
My boost is quite low, max boost 1 bar, low boost 0.8 bar
I'm actually using motul semi synth 10-40
For the coolent I'm using the motul coolant, but I don't think its has much to do with the coolant?
About the piston & cylinder wall, you could be right, because I myself have been wanting to open and check those for quite some time now...
But the fact that I got a tip from someone if there is really something wrong there, the compression won't show exact perfect figures for all 4 pistons - please correct me if I'm wrong.
At the breather nozzle, I don't use oil catch. I have a pipe going to nowhere.
I've to check later whether alot of air coming out from it. :)
Does this show anything?
Papa:
I don't think its my water pump. I changed to a brand new one last year. :)
Rocker cover I don't think so. I changed the seal twice this year! Because I thought it was the rocker cover, now its super clean..
To add to that, sometimes there's water coming out from the reservoir when I stop the car, I just assume thats nothing, because I may put too much water in there. :hmmmm: