🔍 Key Concepts

• Lubricating oil consumption vs. lubricating oil flow problems • How piston rings control oil in the cylinder during the power stroke • Effect of viscosity and temperature on oil circulation and leakage

💭 Think About

• Which option directly allows more lube oil to enter the combustion space and be burned, rather than just restricting or slowing oil flow? • Think about how worn or damaged components in the cylinder affect the barrier between the crankcase oil and the combustion chamber. • For each choice, ask: does this condition make it easier or harder for oil to pass into places it should not be, such as the combustion chamber or exhaust?

✅ Before You Answer

• Identify which condition would most likely lead to oil getting past sealing surfaces (like rings or guides) and being burned. • Distinguish between issues that cause poor lubrication/flow versus those that actually increase oil consumption. • Consider typical signs of high oil consumption in real engines (e.g., blue exhaust smoke, frequent need to top up oil).