Preface: I know nothing about cars, like nothing at all. In car movies they always rev their cars to be cool, but I’ve heard people irl say it’s bad to do. Is it? If so, why? Explain simply please because I don’t know enough about car mechanics to understand otherwise; I don’t know car terms either.
In: 2
Revving your car when the engine is cold is not good because the oil isn’t warmed up enough to lubricate all parts sufficiently.
when revving the car for a prolonged time during still stand your engine won’t be cooled enough because there isn’t enough airflow, so your engine can overheat, which is also bad.
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