🔍 Key Concepts

• Effect of temperature on lubricating oil properties (viscosity, oxidation, breakdown) • What happens to oil at too high a temperature vs normal operating range • Relationship between overheating, sludge/carbon deposits, and wear

💭 Think About

• Think about how heating most liquids affects their thickness (viscosity)—do they get thicker or thinner? • What happens to engine parts and oil passages when oil starts to burn or oxidize instead of just lubricate? • If the oil is overheated and damaged, would you expect the engine to use more or less oil?

✅ Before You Answer

• Identify which options describe negative effects versus improvements in lubrication • Recall that very hot lube oil usually leads to breakdown and deposits, not better performance • Check which choice correctly matches high temperature with a realistic change in oil behavior (viscosity, consumption, or deposits)