MBWorld.org Forums - View Single Post - 10w-30 Mobil One Synthetic.

fourml8r · 06-15-2009, 07:31 PM

10W-30 is perfectly fine. both that oil and the "Recommended" 0W-40 will meet the same classifications. The difference is the "Weight" of the oil which in laymans term is its' abaility to flow in colder weather (Hence the -20 statement). Caveat is that you are using the recommended full synthetic.

As far as filters, you're wasting money by getting it at the dealer. You can find them online easily for much lower prices than the dealer. Check for Mann or Mahle filters, they are OEM suppliers to MB. Use the better "Fleece" filters rather than the cheaper paper filters.

For future info., mixing grades of oil is not a problem, you'll just end up with something inbetween the 2 weights of oil. And if you're only adding 1 qt. of a different weight to 7 qts. in the car already, the actual difference is low (Figure ~10% change). That will not impact you're car at all.

06-15-2009, 07:31 PM	#5
fourml8r Junior Member Join Date: Aug 2007 Posts: 66 Drives: 2005 CLK55 AMG CABRIOLET	10W-30 is perfectly fine. both that oil and the "Recommended" 0W-40 will meet the same classifications. The difference is the "Weight" of the oil which in laymans term is its' abaility to flow in colder weather (Hence the -20 statement). Caveat is that you are using the recommended full synthetic. As far as filters, you're wasting money by getting it at the dealer. You can find them online easily for much lower prices than the dealer. Check for Mann or Mahle filters, they are OEM suppliers to MB. Use the better "Fleece" filters rather than the cheaper paper filters. For future info., mixing grades of oil is not a problem, you'll just end up with something inbetween the 2 weights of oil. And if you're only adding 1 qt. of a different weight to 7 qts. in the car already, the actual difference is low (Figure ~10% change). That will not impact you're car at all.