CNG vehicles are becoming more common every day. However, many drivers wonder about the right time to refill CNG. Some people believe early morning or night filling provides more gas. This idea is not completely wrong because lower temperatures increase CNG density. Therefore, the vehicle tank can hold slightly more gas during cooler hours. This may also provide a small mileage benefit.
Why Cooler Temperature Changes CNG Filling
CNG works as a gas, and temperature affects its density. When weather conditions remain cooler, CNG becomes denser inside the vehicle tank. As a result, filling CNG during colder periods can allow slightly more gas storage. Therefore, morning and night hours may offer a small advantage for drivers.
How Much Benefit Does CNG Timing Provide?
Filling CNG during morning or night does not create a major mileage difference. However, drivers who want small savings can choose cooler hours for refilling. This practice may provide a minor benefit over time.
Pressure Also Affects CNG Filling
Apart from temperature, pressure also plays an important role during CNG refilling. Since temperatures remain lower during morning and night, the filling process can become slightly better. Therefore, CNG may enter the tank in a more suitable pressure condition during these hours.
