2003 Mercedes CL-Class Owner's Manual - Page 241

Operation Engine compartment The oil level is acceptable when it leaves a line between the upper and lower marks of oil dipstick 1. Adding engine oil Unscrew the filler neck cap 1 from filler neck. 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. i Fill quantity between upper and lower oil dipstick marking level is approximately 2.1 US qt (2.0 l). For adding oil see ( page 241). See "Practical hints" ( page 281) if the engine oil level indicator lights up in the display while the engine is running. More information on engine oil can be found in the "Technical data" ( page 339). CL 500, CL 55 AMG ! Excessive 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. Screw the filler neck cap 1 back on the filler neck. More information on engine oil can be found in the "Technical data" ( page 339). 1 Filler neck cap CL 600 1 Filler neck cap 241