2003 Mercedes CLK-Class Owner's Manual - Page 259

Operation Engine compartment Windshield washer system and headlamp cleaning system* Fluid for the windshield washer system and the headlamp cleaning system is supplied from the windshield washer reservoir. It has a capacity of approx. 6.4 US qt. (6 l). During all seasons, add MB Windshield Washer Concentrate "S" to water. Pre-mix the windshield washer fluid in a suitable container. Refill the reservoir with MB Windshield Washer Concentrate and water (or commercially available pre-mixed windshield washer solvent/antifreeze, depending on ambient temperatures). Always use washer solvent/antifreeze where temperatures may fall below freezing. Failure to do so could result in damage to the washer system/reservoir. The windshield washer system on this vehicle is heated, so a fluid mixture produced for temperatures of approximately 14°F (-10°C) should be sufficient. Warning! G Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/antifreeze on hot engine parts, because it may ignite. You could be seriously burned. 1 Washer fluid reservoir ! Only use washer fluid which is suitable for plastic lenses. Improper washer fluid can damage the plastic lenses of the headlamps. More information can be found in the "Technical data" section ( page 357). 259