Did he replaced the valve oil seals. Because this may be the damage. Or else depending the damage may be the piston rings.
As you say you need an oil with min SAE 20 because the thin oil can pass through the cylinder chamber oil canals.
This has to be repaired because this will cause damages to the catalalytic converted and the engine oxygen sensor
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Saturday, October 4th, 2008 AT 12:28 AM