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Is It Normal for Fuel Consumption to Increase After the First Maintenance?

1 Answers

SilasRose

07/29/25 9:55pm

After changing to new engine oil during the first maintenance, the engine's transmission components and cylinders need time to adapt to the new oil, and a new oil film gradually forms. Therefore, it is normal for fuel consumption to slightly increase and for the engine noise to be slightly louder immediately after the oil change (it is advisable to avoid high speeds and excessive engine RPM). Additionally, if the new oil is overfilled (exceeding the upper limit on the dipstick, increasing crankshaft rotation resistance) or is unsuitable (having excessively high high-temperature viscosity), it can also lead to increased fuel consumption. The main factors affecting a car's fuel consumption include: 1. Advanced automotive technology: The vehicle's weight, aerodynamics, and engine thermal efficiency are three key technologies related to fuel consumption. 2. Good vehicle condition: Besides keeping the car clean, proper maintenance is crucial, such as lubricating wheel hub bearings regularly, replacing the air filter element periodically, and promptly checking the brake system. 3. Incorrect driving habits can significantly increase fuel consumption: As cars become more common in households, non-professional drivers are increasing, and some bad driving habits can lead to higher fuel consumption. 4. Road conditions greatly determine fuel consumption: Driving in urban conditions can increase fuel consumption by 20% compared to driving on test tracks. The biggest factor affecting fuel consumption in cities is frequent starts, stops, gear shifts, acceleration, and deceleration due to traffic congestion. Driving on poor road conditions also increases fuel consumption.

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