2004 Mercedes CLK-Class Owner's Manual - Page 285

Operation Engine compartment ! Excess oil must be siphoned or drained off. It could cause damage to the engine and catalytic converter not covered by the Mercedes-Benz Limited Warranty. More information on messages in the display concerning engine oil can be found in the "Practical hints" section ( page 326). Adding engine oil ! Only use approved engine oils. For a listing of a approved engine oils, refer to the Factory Approved Service Products pamphlet in your vehicle literature portfolio. In addition, check the oil filler cap for important information pertaining to the engine oil needing to meet a specific Mercedes-Benz specification (e.g. MB 229.5). If such information is printed on the oil filler cap, only use an engine oil from the list of approved engine oils in the Factory Approved Service Products pamphlet that meets the specification indicated on the oil filler cap. Using engine oils of other specification may cause the FSS to incorrectly determine the next service interval and will result in engine damage not covered by the Mercedes-Benz Limited Warranty. 1 Filler cap Unscrew filler cap 1 from filler neck. Be careful not to overfill with oil. Add engine oil as required. Be careful not to overfill with oil. Be careful not to spill any oil when adding. Avoid environmental damage caused by oil entering the ground or water. 285