🔍 Key Concepts

• heat exchangers (coolers) that use fresh water on one side and lube oil on the other • normal flow paths of lube oil vs fresh water in a diesel engine system • which components actually bring lube oil and fresh water into close contact

💭 Think About

• Which listed component has both lube oil and fresh water passing through it, separated only by tubes or plates? • Would a pump failure or camshaft seizure introduce oil into the fresh water, or would it mainly affect pressure/rotation? • Does an overflow in the lube oil sump normally connect directly to the fresh water side, or stay within the lube oil system?

✅ Before You Answer

• Identify the only component that serves as an interface between the lube oil system and the fresh water cooling system. • Confirm that the other options affect mechanical operation or oil level but do not mix the two fluids by design. • Visualize or sketch the piping diagram showing where lube oil and fresh water run adjacent to each other.