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I have a high mileage M6 with almost 60K mi and have low oil consumption and daily drive the car. what I have seen and heard from other owners with the car is that as long as you stay under 700 hp to the wheels you are fine and not going to break anything. also the sudden delivery of torque is what fatigues these engines. Driving the car in a less abusive manner is helpful to prolong its life, however it does need to be pushed regularly to ensure all the components are working properly.
Its actually rather surprising that I have seen so many lower mileage cars suffering from excessive engine wear and failure
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