Should I check transmission fluid with the engine running? This question often perplexes vehicle owners, especially those who are not quite familiar with the intricacies of automotive maintenance. The practice of checking transmission fluid while the engine is in operation seems to evoke a mix of opinions, some vehemently in favor while others caution against it. But what are the underlying reasons for either stance? Would it not be prudent to consider the potential implications of an elevated temperature on fluid viscosity? One must ponder whether engaging the engine alters the true reading of fluid levels. Could the enhanced circulation and distribution of fluid lead to a more accurate assessment of its condition? Or might it, conversely, obscure critical details that could signify an impending transmission problem? Surely, this matter deserves a thorough examination, doesn’t it?