2003 Mercedes C-Class Owner's Manual - Page 236

Operation Engine compartment Closing Warning! Engine oil Warning! G The engine is equipped with a transistorized ignition system. Because of the high voltage it is dangerous to touch any components (ignition coils, spark plug sockets, diagnostic socket) of the ignition system with the engine running while starting the engine if ignition is "on" and the engine is turned manually G Be careful that you do not close the hood on anyone. The amount of oil your engine needs will depend on a number of factors, including driving style. Higher oil consumption can occur when the vehicle is new the vehicle is driven frequently at higher engine speeds Engine oil consumption checks should only be made after the vehicle break-in period. Checking engine oil level When checking the oil level the vehicle must be parked on level ground be at normal operating temperature have been stationary for at least five minutes with the engine turned off Let the hood drop from a height of approximately 1 ft (30 cm). The hood will lock audibly. Check to make sure that the hood is fully closed. If you can raise the hood at a point above the headlamps, then it is not properly closed. Open it again and let it drop with somewhat greater force. 236