2005 Mercedes SL-Class Owner's Manual - Page 280

Operation Engine compartment Windshield washer system and headlamp cleaning system The windshield washer reservoir is located in the engine compartment. 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 point. Failure to do so could result in damage to the washer system/reservoir. 1 Washer fluid reservoir Fluid for the windshield washer system and the headlamp cleaning system is supplied from the windshield washer reservoir. It has a capacity of approx. 7.4 US qt. (7 l). Warning! G Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/antifreeze on hot engine parts, because it may ignite and burn. You could be seriously burned. ! Only use washer fluid which is suitable for plastic lenses. Improper washer fluid can damage the plastic lenses of the headlamps. For more information, see "Windshield and headlamp washer system" ( page 438). 278