New headgasket at 80k, because I had a VERY minor leak which Starmark was very generous to repair. So, nothing but M1 every 5k on this headgasket, total of 60k miles. No leaks, mostly 15w50, but I think that is overkill especially with a solid gasket/clean motor. Am running the new 5w40 from MB and probably will unless I start developing any leaks down the road

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former: 83 300D, 97 C230, 93 400E

current: 08 C300 Luxury , 92 500SL