🔍 Key Concepts

• Diesel engine cool-down procedures • Effects of high temperature and load on turbochargers and pistons • Importance of gradual temperature change to prevent damage

💭 Think About

• What happens inside a heavily loaded diesel engine (turbo, exhaust valves, pistons) if you stop it instantly at high temperature? • Which option best allows the engine to cool and stabilize temperatures evenly before you secure it? • Among the choices, which one reduces stress on engine parts and lubricating oil, rather than increasing it just before shutdown?

✅ Before You Answer

• Identify which option involves removing or reducing load before shutdown. • Check which choice would avoid heat soak and coking of lubricating oil in hot parts (like turbocharger bearings). • Eliminate any choice that suggests immediate shutdown under heavy load or adding load right before stopping.