Most engines on the road today are designed to last well over 100,000 miles. An engine will last much longer if the engine is not abused. So, any and all maintenance that the manufacturer recommends should be done on or before it is due.
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Granted, anything with mechanical parts is subject to failure of one type or another. Abusing an engine, no matter its quality, can and most likely will shorten its life. When you do not change the fluids and filters you will cause excessive part and component wear.