why check transmission fluid when the engine is running

The video explains why it is important to check transmission fluid with the engine running, emphasizing how this method provides an accurate reading due to fluid circulation, pressure maintenance, and proper operating temperature. It outlines the critical roles of transmission fluid, such as lubrication and cooling, and details the correct steps for checking fluid levels safely. The video also touches on how different transmission types may require different procedures and underscores the importance of regular maintenance to ensure transmission health and vehicle performance.