Effects of Low Oil Levels and Lack of Oil Changes on a Car
Reduced Lubrication:

Oil lubricates engine components, reducing friction and wear. Low oil levels can lead to insufficient lubrication, causing components to grind against each other, leading to damage.

Overheating:

Oil helps dissipate heat generated by the engine. The engine can overheat without adequate oil, potentially causing warping or cracking of parts like the cylinder head.

Increased Wear and Tear:

Lack of oil changes results in dirty oil that loses effectiveness, allowing abrasive particles to circulate and damage engine components.

Engine Seizure:

Extremely low oil levels or degraded oil can lead to engine seizure, where moving parts lock up due to excessive friction, often resulting in irreversible damage.

Poor Engine Performance:

Low or dirty oil reduces engine efficiency, decreasing power, poor acceleration, and increased fuel consumption.

Clogged Oil Passages:

Old oil can thicken or form sludge, blocking oil passages and further restricting lubrication to vital engine parts.

Damage to the Oil Pump:

Low oil levels can cause the oil pump to run dry, damaging this critical component that circulates oil throughout the engine.

Corrosion and Rust:

Fresh oil contains additives to prevent rust and corrosion. Without regular oil changes, these protective additives degrade, exposing the engine to harmful oxidation.

Shortened Engine Lifespan:

Chronic neglect of oil levels and changes accelerates engine wear, significantly reducing its lifespan.

Costly Repairs:

Problems like engine seizure, overheating, or component failure often require expensive repairs or complete engine replacement.

Preventive Measures:
Regularly check and maintain appropriate oil levels.
Follow the manufacturer’s recommended oil change schedule.
Use the correct type and grade of oil as specified for your car.
Proper oil levels and timely oil changes ensure smoother engine operation, better performance, and extended vehicle life.