8th Jul 2017, 07:56

if you were a mechanic, you'd know the difference between compression and oil control rings. The compression rings were giving very good compression across all cylinders. I thought maybe the oil control rings were 'stuck' - which happens on some cars for sure, but extensive 50/50 paraffin/oil 'washes' (an extensive approach someone should only do when they really know what they are doing) never changed oil usage. I feel it was unlikely they were stuck, but still possible. It is more likely they were worn out.