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Old 10-30-2001, 10:55 PM
olivo880
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I forgot to mention the shop said they corrected some vacumm leaks. Spark plugs are H9DC. I tried a tank of 89 octane but saw no noticable improvements so I'm back to 93. My service records indicate the previous owner replaced the valve guides at 145K miles.

1986 300E 199K

Ran like a dream until I had it serviced.
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