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I was driving my wife's Prius the other day and I noticed how the engine is constantly cycling on and off.
I know from my engineering experience that the vast majority of engine wear actually occurs at startup since the oil is not in the vital places it needs to be. (Oil settles to the pan when the engine isn't running.)
So my question is this: How does the Prius keep from prematurely wearing out? Does it keep the oil pump running even after the engine is off?
I wonder if this is why Toyota doesn't recommend synthetics as these oils tend to be more free flowing and would drain away from critical parts faster when the oil isn't being pumped...hmmmmm.....
Anyone?
I know from my engineering experience that the vast majority of engine wear actually occurs at startup since the oil is not in the vital places it needs to be. (Oil settles to the pan when the engine isn't running.)
So my question is this: How does the Prius keep from prematurely wearing out? Does it keep the oil pump running even after the engine is off?
I wonder if this is why Toyota doesn't recommend synthetics as these oils tend to be more free flowing and would drain away from critical parts faster when the oil isn't being pumped...hmmmmm.....
Anyone?