Does idling for 30 minutes damage the engine?

[McOscar]

Idling for 30 minutes can damage the engine. Engine maintenance methods: 1. Use qualified engine oil; 2. Use qualified coolant; 3. Regularly clean the radiator scale; 4. Regularly remove carbon deposits from the engine; 5. Replace the vehicle's air filter, oil filter, and fuel filter on time; 6. Check if the spark plugs are damaged. Solutions for insufficient engine power: 1. Clean carbon deposits from the cylinders, throttle, spark plugs, intake system, and engine; 2. Replace with high-quality gasoline; 3. Clean the air filter; 4. Check the levels of engine oil and coolant.