I have 2004 Mercedes-Benz C240 6 Cyl. 4-matic, is the oil filter a spin-on or a filter kit? How many qts. of oil and what weight?

Thanks

The oil filter is a cartridge style located at the top left just above the power steering reservoir. The engine will take @7.5-8 litres of 5w30 full synthetic ( Benz recommends Mobil 1 ).

8 liters.

5w30 is incorrect. 5w30 is not Mercedes MB 229.5 approved.

Don't believe me? go to mobiloil.com and choose your vehicle.

What you need is 0w40 European Formula.
https://www.mobiloil.com/USA-English/MotorOil/Oils/Mobil_1_0W-40.aspx