My 1999 156 oil consumption has gone sky high.
Depending on my driving conditions i fill average of 1 liter per 500Km.
I can hear engine knocking (hard to notice but obvious enough) when i floor the gas pedal and accelerate, and I had a friend rev the car for me, and I can see light white smoke when being reved at about 3K-4K.
No oil leaks on engine bottom.
After researching on older posts, It seems like it's down to piston rings or valve seals.
What do you think alfa owner?
I'm thinking about going for piston rings replacement, should I replace valve seals as well since engine is being worked on, or it might not be necessary?