🔍 Key Concepts

• Function of lube oil in an engine sump and what happens when the crankshaft rotates through excess oil • How foaming/aeration affects lubrication and bearing surfaces • Relationship between oil level, temperature, and engine load/speed

💭 Think About

• Visualize the crankshaft and connecting rods: what happens if they dip too deeply into the oil in the sump during rotation? • How would air bubbles in oil affect its ability to form a strong lubricating film on bearings and moving parts? • Would an engine always be unable to reach full speed just because the oil level is too high, or is that a secondary/indirect effect?

✅ Before You Answer

• Identify which option is the most direct and immediate mechanical consequence of an excessively high oil level • Distinguish between primary effects (what happens right away in the sump) and secondary effects (what might happen later as a result) • Ask yourself which choices describe guaranteed outcomes versus possible but not certain consequences