Newer vehicles say they can do up to 7500 miles on a oil change. I would never do that though. The more frequently you change the oil the better it is for the vehicle no matter if it is a Mercedes or a Buick. I try to change mine at least no more than 5000 miles. I use sythetic oil and have been happy with the results. It is seems to start easier on those cold morings and also the synthetic doesnt break down near as easily as regular petroleum based oils. I hope this helps you. Good luck.
How i can change the engine oil for my my mercedes benz 240c 2003?
The 2003 Mercedes-Benz S-Class has a V8 engine.
The 2003 Mercedes-Benz SL-Class has a V8 engine.
The 2003 Mercedes-Benz CL-Class has a V8 engine.
The 2003 Mercedes-Benz G-Class has 24 valves.
The 2003 Mercedes-Benz S-Class has 24 valves.
The 2003 Mercedes-Benz E-Class has 18 valves.
The 2003 Mercedes-Benz M-Class has a V6 engine.
The 2003 Mercedes-Benz C-Class has 16 valves.
The 2003 Mercedes-Benz SLK-Class has 16 valves.
The 2003 Mercedes-Benz G-Class has a V8 engine.
The 2003 Mercedes-Benz E-Class has a V6 engine.