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The Jeep Liberty requires mopar antifreeze, and if you encounter engine issues, there may be problems like excessive oil consumption, leading to more frequent oil changes. A critical concern is the risk of engine overheating, which could result in fires and even explosions. It is important to promptly tighten any loose gaskets and address issues like a loose spark plug that can cause engine troubles. Any oil leaks should be promptly repaired. Coolant should be replaced every 60,000 miles, while spark plugs should be replaced every 100,000 miles unless they are copper spark plugs, which need to be changed every 30,000 miles. The air filter should be replaced every 15,000 to 30,000 miles.
The Jeep Liberty relies on mopar coolant for its cooling system.