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John Harsh (not verified)    February 8, 2023 - 10:00PM

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Crankshaft bearings in an internal combustion engine depend on a film of oil to prevent metal - metal contact & wear. Much of the wear on a typical engine occurs during starting when oil pressure has not yet built up. It looks like Toyota's oil pump is driven off the engine. How do they maintain lubrication to the bearing surfaces when their hybrid engines shut off while the car is running under battery power ?

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