What can cause low engine oil pressure?

Low engine oil pressure can be a significant indicator of underlying engine issues, which can lead to severe engine damage if not addressed promptly. The correct answer identifies several critical factors that commonly result in low oil pressure.

Worn bearings are a common reason for low oil pressure because they increase the clearance between moving parts. This allows oil to flow more freely, reducing the pressure in the lubrication system. When bearings wear out, they can no longer maintain the necessary oil retention, which is vital for creating adequate pressure.

Oil pump failure is another direct cause of low oil pressure. The oil pump is responsible for circulating oil throughout the engine. If the pump starts to fail or becomes damaged, it will not adequately move the oil through the system, leading to a drop in pressure.

Thick oil at low temperatures can also affect oil pressure. When oil is too thick, especially in cold conditions, it doesn't flow easily through the engine. This sluggish movement can prevent the oil from reaching all areas of the engine quickly, resulting in a drop in oil pressure, especially during startup.

In contrast, the other answer choices do not directly correlate with oil pressure issues. Clogged air filters and damaged radiators do not influence oil pressure, and problems with spark plugs or tires have