We've been doing it since our earliest days as student pilots. Now that we're aircraft owners, we still do it as part of our standard preflight ritual. But are we doing it right?It turns out that there's a lot more to checking the engine's oil dipstick properly than just making sure that the oil level is above the minimum-for-flight level listed in the POH. If we really pay attention, we can learn a lot about the condition of our oil and of our engine.
This is a companion discussion topic for the original entry at https://www.avweb.com/ownership/the-savvy-aviator-40-checking-the-dipstick