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I saw somebody say something about not needing to let a car warm up anymore.
This is NOT true. You absolutely need to let a car warm up still. Think about it. Oil that is not warm is much thicker....using high revs on a cold engine is definitely bad for it, it stresses all the components far more than once the oil is hot.
I wont rev a car past around 3500 until the engine is warm.
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