Aviation Boatswain’s Mate – Fuels (ABF) Practice Test

Oil sump capacity is the total amount of oil the engine’s sump can hold and the amount you should add to reach the proper level. For this engine, the specification is a range—8 to 8.5 quarts—rather than a single fixed value. That range accounts for small differences between engine variants, the oil filter installed, and how oil settles in the system after draining or warming up. In practice, you fill to the full mark within that range, which ensures the sump has enough oil while avoiding overfilling. The 8-quart amount is a common starting point, but up to 8.5 quarts may be needed depending on the exact engine configuration and measurement conditions.