🔍 Key Concepts

• Crankcase explosions and what typically ignites them • How lube oil condition affects heat, vapors, and hot spots inside the crankcase • Difference between long‑term engine wear issues vs. sudden explosive conditions

💭 Think About

• Which option is most directly linked to creating an explosive oil mist and a hot spot inside the crankcase? • Which condition could reasonably happen without being noticed right away and then suddenly cause an explosion, rather than just poor engine performance? • Which choices mainly cause efficiency or wear problems, and which one creates a fire/explosion risk inside the crankcase?

✅ Before You Answer

• Identify which condition can lead to oil mist formation and local overheating in the crankcase. • Separate options that mainly cause gradual damage or efficiency loss from those that can cause a sudden explosive event. • Verify which choice is most commonly mentioned in engineering safety texts as a primary cause of crankcase explosions.