I have a 1991 500sl with 115,000 miles. My independent mercedes mechanic tells me that he has never seen the bottom end of one these motors wear out.

The car is meticulously maintained and it has been throughout its life. Can anybody enlighten me as to expected mileage on this engine before a bottom end overhaul is required?

I am assuming that headwork will be required between 180,000 and 200,000 miles.

Thanks.

MG

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1991 500 SL
2002 BMW 745i
2003 Harley Electra Glide