🔍 Key Concepts

• Trace the flow arrows from the lube oil pump to the engine bearings and to the filter in the illustration. • Understand the difference between full‑flow filtration, bypass/shunt filtration, and sump filtration in typical engine lube systems. • Notice where the filtered oil returns: does it go to the bearings, back to the sump, or both?

💭 Think About

• Does all of the oil going to the engine bearings pass through the filter first, or do the bearings receive oil directly from the pump? • After oil passes through the filter, does it rejoin the main supply line to the bearings, or does it discharge somewhere else? • What is the function of the pressure‑regulating relief valve here: is it protecting the bearings line, the filter, or just controlling flow back to the sump?

✅ Before You Answer

• Identify which line is labeled filtered oil and which is unfiltered oil, and where each one goes. • Confirm whether the bearings are fed from the filtered or unfiltered side of the system. • Decide whether the filter is located in the main supply line to the bearings or in a side/return path to the sump.