Quick Answer
GENERATOR FUEL GAUGE ACCURACY: Propane levels on your dual-fuel generator's gauge are often less accurate than those for gasoline, making it difficult to rely solely on the gauge for fuel level estimation.
Fuel Gauge Limitations
Dual-fuel generators that run on both propane and gasoline often utilize a single fuel gauge for both fuels. However, as the fuel types have different densities, the gauge may not accurately reflect the actual propane levels in the tank. For instance, a 20-pound propane tank contains approximately 4.65 gallons of propane, but a 20-gallon gasoline tank holds exactly 20 gallons of gasoline. This discrepancy can lead to inaccurate readings.
Propane Tank Size and Capacity
To accurately estimate propane levels, it’s essential to consider the tank size and its capacity. A standard 20-pound propane tank, for example, has a capacity of approximately 4.65 gallons. This can be calculated by multiplying the tank’s weight (in pounds) by 0.234 gallons per pound. Knowing the tank’s capacity and the generator’s fuel consumption rate can help you estimate how much propane is left in the tank.
Best Practices for Monitoring Propane Levels
To ensure you don’t run out of propane unexpectedly, it’s recommended to monitor the tank’s level regularly. This can be done by checking the propane tank’s weight, which can be measured using a propane tank scale. Additionally, tracking your generator’s propane consumption rate and maintaining a log can help you estimate how much propane is left in the tank. This information can be used to plan refueling or to schedule maintenance for the generator.
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