so we have the head is good and turbo is good,
now we need what is allowing oil into each pot ?,
if it was just one pot I would say suspect cracked head or an oil control ring
but not all four failing the same way, and looks like equal amounts of oil in each pot
I don't want to say swap the head or re-ring the pistons as not convinced that is the fix
but we are running out of options,I'm leaning towards rings more than head
might have to pull one piston out and look for tell tale signs
it's the oil in each pot that's throwing me off
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