2004 Mercedes SLK-Class Owner's Manual - Page 256

Operation Engine compartment Engine oil 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 with the control system 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 To check the engine oil level via the multifunction display, do the following: Switch on the ignition. The standard display ( page 127) should appear in the multifunction display. Press button k or j on the steering wheel until the following message appears in the multifunction displays: i Do not use any special lubricant additives, as these may damage the drive assemblies. Using special additives not approved by Mercedes-Benz will restrict your warranty entitlement. More information on this subject is available at any Mercedes-Benz Center. 255