2012 Dodge Challenger Owner Manual SRT8 - Page 386

384 MAINTAINING YOUR VEHICLE • Mix a minimum solution of 50% HOAT engine coolant and distilled water. Use higher concentrations (not to exceed 70%) if temperatures below Ϫ34°F (Ϫ37°C) are anticipated. Cooling System Pressure Cap The cap must be fully tightened to prevent loss of coolant and to ensure that coolant will return to the radiator from the coolant recovery bottle. • Use only high purity water such as distilled or deion- The cap should be inspected and cleaned if there is any ized water when mixing the water/engine coolant accumulation of foreign material on the sealing surfaces. (antifreeze) solution. The use of lower quality water WARNING! will reduce the amount of corrosion protection in the engine cooling system. • The warning words "DO NOT OPEN HOT" on Please note that it is the owner's responsibility to mainthe cooling system pressure cap are a safety pretain the proper level of protection against freezing accaution. Never add coolant when the engine is cording to the temperatures occurring in the area where overheated. Do not loosen or remove the cap to the vehicle is operated. cool an overheated engine. Heat causes pressure to build up in the cooling system. To prevent scaldNOTE: Mixing engine coolant (antifreeze) types will ing or injury, do not remove the pressure cap while decrease the life of the engine coolant (antifreeze) and the system is hot or under pressure. will require more frequent coolant changes. (Continued)