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The 2010 Dodge Avenger uses yellow antifreeze with OAT technology specifically made for American cars. It should be mixed with water to a 50/50 ratio if not already diluted. The Avenger's 3.5-liter 6-cylinder engine requires 11.6 US quarts of antifreeze. You can locate the coolant reservoir under the hood on the passenger side, towards the middle and close to the firewall. Always check the levels when the engine is cool. Avoid removing the coolant cap when the engine is hot to prevent splattering and burns. Low antifreeze levels can lead to high engine temperatures, warning lights, and front leaks. If parts like the thermostat, water pump, or radiator hoses need fixing, it could affect the antifreeze levels.
I would recommend using the appropriate antifreeze for your vehicle based on the type specified in your manual.
One good option for maintaining the temperature of your 2010 Dodge Avenger is to use Zerex 50/50 Antifreeze and Coolant.