What is the required expansion space for an oil tank with a capacity of 5 gallons?

For an oil tank with a capacity of 5 gallons, the required expansion space is determined by considering the thermal expansion of the oil. Typically, the guidelines suggest that for every gallon of oil, approximately 10% of its capacity should be allocated for expansion.

In this case, if the oil tank holds 5 gallons, 10% of that volume would be 0.5 gallons. Since there are 4 quarts in a gallon, 0.5 gallons translates to 2 quarts (0.5 gallons x 4 = 2 quarts). Thus, the required expansion space for a 5-gallon oil tank is indeed 2 quarts, making this the correct choice.

Understanding the need for proper expansion space is crucial for preventing overfilling and potential spills, which can lead to safety hazards and environmental concerns.