🔍 Key Concepts

• purpose of a lube oil gravity tank in an engine room system • how overflow lines work when pumps are running vs. stopped • relationship between engine operation, service pumps, and oil circulation

💭 Think About

• Think about when oil is actually being pumped up to, and returned from, the engine. In which choices is there active circulation that could cause overflow? • Ask yourself: does the gravity tank overflow depend more on the engine turning, or on the service pumps supplying oil? • For each option, picture the flow path: sump → service pump → system → gravity tank → overflow. At which condition would that path NOT be active?

✅ Before You Answer

• For each choice, decide if the lube oil service pumps are running or stopped under that condition. • Confirm whether the gravity tank is being supplied with oil (from pumps) in that condition, or just sitting static. • Check your basic principle: no pump flow = no new oil to overflow, even if the engine is turning slowly. Verify which option best matches that.