I had the dealer do my oil and filter since it was in for shocks, and it was time. This is the first shop-performed oil change done since the car ran out of warranty 40k ago. I thought I would have them put in 0w40 M1 for the winter months. I've been using 15w50 extended life.

My rep said they no longer use that, and went to an MB-branded 5w40. I assume it's M1......anybody know? Doc? I know you do!

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

current: 08 C300 Luxury , 92 500SL