I have a friend who's looking at a higher mileage 606. Just curious: for those of you who have had to have the head gasket replaced, what was the mileage?

There's a recent thread about someone needing it replaced at just over 150k, but I'm assuming that's an anomaly.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Anytime after 250,000 mi. Watch for coolant leakage at rear of block on the passenger side unless it has been abused. Go ahead and do timing chain/guides while in there.

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Jim

My '95 had about 310,000 on it when the gasket started showing signs of external coolant seepage. I had Metric Motors surface the head, replace the valve guides, new exhaust valves, etc. The bottom end looked amazing - original honing marks in the bores were still like new.

She's now at 410,000+ miles. Unfortunately, she has just recently started to have residual pressure remaining in the cooling system in the mornings. What a bummer. I'll be investigating this further in coming weeks....

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Current rolling stock:
2001 E55 183,000+ Newest member of the fleet.
2002 E320 83,000 - The "cream-puff"!
1992 500E 217,000+
1995 E300D 412,000+
1998 E300D 155,000+
2001 E320 227,000+
2001 E320 Wagon, 177,000+

Prior MBZ’s:
1952 220 Cab A
1966 300SE
1971 280SE
1973 350SLC (euro)
1980 450SLC
1980 450SLC (#2)
1978 450SLC 5.0
1984 300D ~243,000 & fondly remembered
1993 500E - sorely missed.
1975 VW Scirocco w/ slightly de-tuned Super-Vee engine - Sold after 30+ years.