Why are Oil Changes so Critical for Your Car’s Health and Lifespan ?? Every second your car is running, literally thousands of explosions are occurring inside the engine. But some of the contaminating by-products of that internal combustion find their way into your vehicle’s oil and lubrication system. Car engines also take in huge quantities of air that’s mixed with gasoline to make these explosions take place. Your car’s oil and air filters are the engine’s best protection against these tiny dirt particles. Minuscule amounts of metal will also float into the oil as the engine naturally wears. But an oil filter can clean out a certain amount of dirt and metal particles before it begins to flow back into the oil system once again. Dirt and debris suspended in the engine oil will definitely cause abnormal engine wear if left to continually recirculate. Regularly changed oil and oil filters cleans out the crippling dirt…and your engine runs cleaner, more smoothly and lasts longer.