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Just changed the oil using a mittyvac and this is the oil after 3500 miles. Is it like this due to the 0w-30 oil they use at the dealer? My oil never looked like this after 3500 miles in my Mercedes. Should I swap to a Mobil 0w-40 or the Castrol 5w-40? Also has what sounds like a timing chain tensioner or decompressed tappets upon start up.
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