Thread: Buying '91 300E
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Old 09-19-2000, 12:51 PM
Alex Kouliy
Posts: n/a
Several hundred dollars to replace the valve seals ONLY, head doesn't have to come off the engine. $1,500 or more to replace seals AND guides, head must be removed. If the guides are severely worn the seal replacement will bring only temporary reduction in oil consumption. At 1 qt per 700 miles, chances are that there's still no visible blue smoke from your exhaust. It's OK to keep adding oil until consumption increases further and/or spark plug fouling becomes an issue.
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