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Good questions!
The valve job consisted of new guides and seals and gaskets. I have not had to replace seats or valves. I saw a head that had a seat replaced and it fell out after 10k miles. I would NEVER allow a seat to be replaced.
After the valve job, the engine runs as new again.
No oil consumption.
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Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS
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