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Understanding Low Oil Pressure

This is a real world demonstration of how to investigate and diagnose the most common cause of low oil pressure in an old chev truck. Did you know there are two one-way valves inside every oil filter? Along the way we’ll demonstrate how oil pressure varies and how several valves in the delivery chain are used to safely manage that pressure and protect your engine. We’ll discuss a design flaw in the famous chevy LS engine series that makes those engines vulnerable to failing oil delivery. If you have a problem with sagging oil pressure, immediately check your oil level and if you’re late for an oil and filter change, do that first. Don’t hesitate to get this investigated quickly, because serious engine damage can result, even while driving to a repair facility. If in doubt, or if there is any engine noise, have the vehicle towed to a repair facility. DIY auto repair will always involve risk, both to the individual and to the vehicle, so you need to decide whether you have the stomach, skill set, and tools to accept those risks. Any misadventure you encounter if you decide to accept the risk of DIY repair is your responsibility. The snap shot of the intake O ring on an LS engine was taken with permission from a video by my friend "Oz Mechanics" here you YouTube. His video video clearly describes the steps necessary to change that O ring in a 2 wheel drive vehicle, here.    • Low Oil Pressure 5.3 Chevrolet tip