🔍 Key Concepts

• Lube oil system pressures before and after filters • How flow resistance changes when a filter gets clogged or dirty • Normal uses and limits of visual inspection in an operating engine

💭 Think About

• Which measurement would change first and most reliably as a filter element becomes clogged during normal operation? • Which options depend on conditions that might be caused by many different problems, not just a dirty filter? • In real-time engine monitoring, what do engineers typically watch on gauges to decide when to change or bypass a filter?

✅ Before You Answer

• Identify which choice is directly related to flow restriction in the filter element • Ask if the method can be used while the engine is running under load without shutting down or disassembling equipment • Eliminate any choices that describe effects that are indirect, nonspecific, or hard to measure accurately in routine watchstanding