Many truck drivers have noticed a significant increase in fuel consumption during winter driving. In fact, winter fuel consumption is mainly affected by common factors.
Why is truck fuel consumption higher in winter?
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Longer warm-up time
At low temperatures, engine oil viscosity increases, requiring the engine to inject more fuel to warm up, leading to increased fuel consumption during startup.
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Increased energy consumption from heating and defrosting
Turning on the heater immediately after a cold start causes the engine to inject more fuel to maintain temperature. Using the defrost system, especially with the compressor running, also increases fuel consumption.
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Lower tire pressure and increased drag
Lower temperatures naturally lower tire pressure, increasing the tire’s contact patch and thus increasing drag, especially noticeable with heavy trucks.
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Increased electrical load
Battery efficiency decreases in winter, increasing starting power consumption. Frequent use of in-vehicle heating equipment indirectly increases fuel consumption.
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Complex road conditions and unstable speeds
Increased icy and slippery roads, frequent acceleration and deceleration, and traffic congestion all contribute to increased fuel consumption. Reduced fluid fluidity, especially at low temperatures, causes engine oil and transmission fluid to thicken, increasing drag and requiring more fuel to operate.
Fuel-Saving Tips
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Don’t Warm Up Forever, Drive at Low Speeds
After a cold start, wait for the engine speed to stabilize (approximately 30 seconds to 1 minute) before engaging gear and starting. It’s recommended to drive at low speeds for 3-5 minutes to allow the engine temperature to gradually rise before resuming normal operating speeds.
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Use Heating and Defog Smartly
Wait until the engine temperature reaches above 60°C before turning on the heater. After defogging, you can turn off the A/C and use the heater to maintain clear visibility by switching to recirculation mode to reduce heat loss and prolong the heating effect.
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Regularly Check and Top Tire Pressure
It’s recommended to check tire pressure before driving to ensure it meets the vehicle’s specifications. Proper tire pressure not only saves fuel but also improves driving safety and tire life. In cold northern regions, consider using winter tires to improve low-temperature grip and fuel efficiency.
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Combine Trips to Avoid Frequent Cold Starts
Frequent short trips are a “hidden killer” of fuel consumption. Plan your routes reasonably and try to combine transport tasks to reduce the number of cold starts per day.
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Choose engine oil with better low-temperature performance
It is recommended to use an engine oil model with better low-temperature fluidity, which helps reduce cold start resistance and running friction, thus improving fuel economy.
