🔍 Key Concepts

• Color coding in the legend: note which color represents lubricating oil and trace that through the system • Understand what a main lube oil manifold does: it distributes oil from the pump to multiple engine components • Differentiate between return/sump lines and pressure supply manifolds on the engine

💭 Think About

• Follow the lubricating oil color from the sump up toward the engine and ask yourself: where is the point that oil is distributed to several bearings or components? • Compare the shapes and locations of the numbered items: which candidate looks like a manifold (a common pipe feeding several branch lines) rather than a single line or component? • Look near the crankshaft and main bearings—does any labeled part there match the idea of a main pressure oil gallery?

✅ Before You Answer

• Verify which labels (11, 17, N, O) are actually in the lubricating oil color according to the legend • Check whether the label you choose is connected to multiple branch lines leading to different parts of the engine, not just one • Confirm that the part you select is on the pressure side of the lube oil system, not in the sump or a filter/strainer housing