For many drivers, engine revving is not necessarily a good thing, as it can signal that you are, perhaps, being overly aggressive behind the wheel, or even worse, that you’ve got a potentially serious problem with your engine or transmission. Of course, revving is not uncommon for hot-rodders with an affinity for hearing their vehicle’s engine roar. Likewise, revving an engine can serve a few positive purposes, including helping raise engine temperature to check oil or other vital fluids, and warming
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