The 5.9L holds about 11.5 to 12 quarts
12 quarts
Yes
The 2001 specifies Mobil 1 Synthetic 5w30. Any brand of synthetic oil would be fine.
Yes, you can even mix synthetic with conventional oil.
Yes
You need to use the type and weight oil that the manufacture requires. From 2001 semi synthetic oil is recommended for the C230 Up to 2001 Mineral oil is OK for use in the C230.
Yes
5W-30 Synthetic Oil.
12 quarts
12 quarts 15w40
Synthetic oil or a blend of Synthetic and regular oil is much better for your vehicle than regular oil alone. Synthetic oil is MUCH more expenshive. If you change your regular oil every 3 months or 3,000 miles I will be fine.
you need 10w40 non synthetic oil for this bad bike!!!!!