2011 Mercedes SLK-Class Owner's Manual - Page 307

171_AKB; 3; 60, en-US d2ureepe, 2009-05-11T16:00:23+02:00 - Seite 305 Version: 2.11.8.1 Fuels, coolants, lubricants, etc. For information on other Mercedes-Benz approved products of equal specification, contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only). To provide important corrosion protection, the solution must be at least 50% anticorrosion/antifreeze (equivalent to freeze protection to approximately -35‡ [-37†]). If you use a solution that is more than 55% anticorrosion/antifreeze (freeze protection to approximately -49‡ [-45†]), the engine temperature will increase due to the lower heat transfer capability of the solution. Therefore, do not use more than this amount of anticorrosion/antifreeze. If the coolant level is low, water and MB 325.0 Anticorrosion/Antifreeze should be used to bring it up to the proper level (have cooling system checked for signs of leakage). Please make sure the mixture is in accordance with label instructions. The water in the cooling system must meet minimum requirements, which are usually satisfied by normal drinking water. Model If you are not sure about the water quality, contact an authorized Mercedes-Benz Center. 305 Anticorrosion/antifreeze Your vehicle contains a number of aluminum parts. The use of aluminum components in motor vehicle engines necessitates that anticorrosion/antifreeze coolant used in such engines be specifically formulated to protect the aluminum parts. Failure to use such anticorrosion/antifreeze coolant will result in a significantly shortened service life. Therefore, the following product is strongly recommended for use in your vehicle: MB 325.0 Anticorrosion/Antifreeze agent. Before the start of the winter season (or once a year in hot southern regions), you should have the anticorrosion/antifreeze concentration checked. The coolant is also regularly checked each time you bring your vehicle to an authorized Mercedes-Benz Center for service. Approximate freeze protection -35‡ (-37†) -49‡ (-45†) 5.7 US qt (5.4 l) 6.5 US qt (6.1 l) Cooling system SLK 300 SLK 350 SLK 55 AMG 5.2 US qt (4.9 l) 5.9 US qt (5.55 l) Z Technical data