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Does idling a car with the air conditioning on consume more fuel?

1 Answers

CeciliaLee

07/29/25 6:07pm

Using the heater does not consume extra fuel, but using the air conditioning does. Here are the details: 1. The car air conditioning system is designed to regulate the temperature inside the cabin, improving driving and passenger comfort. Its purpose is to provide a comfortable driving environment for the driver and passengers. It generally consists of a compressor, condenser, receiver-drier, expansion valve, and evaporator. The power source for the car air conditioning compressor comes from the engine. 2. There are two scenarios when using the car air conditioning. If it's winter and the heater is on, the air conditioning compressor does not work. The vehicle's heater uses the temperature of the coolant to raise the cabin temperature. 3. Since the power source for the car air conditioning compressor comes from the engine, when the air conditioning's cooling function is used in summer, the compressor works, consuming part of the vehicle's power, which results in additional fuel consumption.

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Can a car run without engine oil?

An automobile cannot continue to operate without engine oil. Here are the reasons why a car cannot run without engine oil: Burning of the crankshaft and bearing bush: Engine oil provides excellent lubrication and cooling effects for the engine. If the car is forced to operate without engine oil, the engine components will suffer from mutual friction damage due to the lack of lubrication. Additionally, without the cooling function, during high-speed operation of the engine, phenomena such as burning of the crankshaft and bearing bush are highly likely to occur. Engine seizure: Continuing to drive a car without engine oil can lead to engine seizure due to the absence of lubrication, with the consequences becoming more severe as the oil level decreases. When the engine is started again, dry or semi-dry friction will form between the cylinder and piston, thereby accelerating the wear of components. The starting resistance will also significantly increase, making it difficult to start the engine.

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