What happens when the engine runs out of oil?

Without engine oil, the engine will not be lubricated, and the combustion will produce high temperature, and the crankshaft and connecting rod bearings will be locked, which will cause serious wear on the bearings, crankshaft, connecting rod, piston ring and cylinder wall, affect the normal work of other system components, and eventually damage the engine and affect the service life of the vehicle.

The engine is the heart of a car. There are many metal surfaces rubbing against each other in the engine. These parts move fast and the environment is harsh, and the working temperature can reach 400℃ to 600℃. Under such harsh working conditions, only qualified lubricating oil can reduce the wear of engine parts and prolong their service life.

Extended data:

Changing the oil and oil filter regularly is also an important process of engine daily maintenance. Oil products of any quality grade will change during use. After reaching a certain mileage, the parts will wear out, which will bring faults to the engine and reduce its performance.

In order to avoid failure, the oil should be changed regularly according to the mileage, and the amount of oil should be moderate (generally it is better to be slightly lower than the upper limit of the oil meter). When the oil passes through the pores of the filter, solid particles and viscous substances in the oil will accumulate in the filter.

If the filter is blocked and the oil cannot pass through the filter element, it will burst the filter element or open the safety valve to pass through the bypass valve, which will still bring the dirt back to the lubrication part and aggravate the engine wear. Therefore, the oil filter element should be cleaned or replaced regularly.

References:

Engine-Baidu Encyclopedia