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Hmm confused now...i have the mobil1 0w40 bottle with me now and it only says vw 502/505 and porsche a40....i have bunch of these since i use these on my mercedes but damn i dont know what to follow...but one thing for sure i can use 5w30 esp. Haha
I was in the same situation when I traded my Mercedes. Had a couple cases of Mobil 1 that met the 229.51 spec (Mobil 1 ESP Formula M 5w40). It was formulated to for Mercedes then-extended oil change cycle. Mercedes still specs it for their clean diesels, but the Porsche C30 spec is clear about using 5W30. So I sold the Mobil 1 and now get Pennzoil Ultra Euro L 5W30 delivered every 4 months by Amazon. Costs less this way too, about $6.70/qt.
