In order to determine the location of the leak, it is necessary to clean the suspected area from dirt, and then, after driving a certain distance, check if there are traces of oil leakage. The most likely places for oil leaks are the cylinder head cover gaskets, bearing shield, oil pan, oil filter, drain plug, and crankcase ventilation hoses.
Malfunctions of the engine lubrication system are manifested by high consumption of engine oil and low pressure in the system. System malfunctions are indicated by the oil pressure warning light.
Increased oil consumption may be the result of worn cylinders, pistons and/or piston rings, valve guides or valve stem seals, crankshaft oil seals or engine gaskets. In general, such a malfunction is a reason for disassembling the engine.
Low oil pressure may be caused by a faulty oil pressure sensor or its wiring, a faulty pressure relief valve, a clogged oil intake screen in the crankcase, a low oil level, a faulty oil pump, or worn main and connecting rod bearing shells. In most cases, when oil pressure drops, the first thing to check is the oil level in the system. All other causes can only be eliminated by disassembling the engine.
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If the engine oil pressure warning light comes on while driving, you must stop and turn off the engine. You should not wait for the control lamp to go out after some time. Such actions may lead to engine seizure.
Specialized auto stores have certain additives that are poured into the engine through the spark plug holes. If these additives are used correctly, they form a so-called "second skin" on the cylinder walls - an oil film that helps reduce oil consumption if oil consumption increases due to wear on the cylinder working surfaces. However, we recommend using such additives only after appropriate consultation with a specialist.