An engine with little or no wear may get by on 7,500 mile oil changes. But as an engine accumulates miles, blow-by increases, dumping more unburned fuel into the crankcase (which dilutes the oil), in turn causing accelerated wear and engine problems, including: loss of performance and fuel economy as well as increased emissions and oil consumption. Thus, for peak performance you'll want your vehicle to have an oil. Chevrolet provides this essential service to all of our clients. And no one knows your vehicle better. When determining when to schedule your next oil change in Keyes Chevrolet, suggest taking this into consideration: how you drive, the condition and age of the engine, the external environment you drive in, and the amount of stop-and-go versus highway driving. If you are unsure feel free to ask a technician at your factory authorized dealer Keyes Chevrolet. What is known is that regularly changing your oil is crucial for vehicle health. Due to the high operating temperatures of the engines, oil goes thermal breakdowns, becoming less effective as a lubricant. When the oil stops lubricating, parts of the engine rub together and wear each other out, leading to costly repairs and replacements.