Checking engine oil!?
Yes and no. The engine has to be off, of course. If it is off for a few minutes, you can get a reading. It will read slightly low, but close enough. If it shows a quart down when hot, then it is down, probably at least half a quart. If it shows half a quart or less down while hot, it is fine. The most accurate check for any car is first thing in the morning, or whatever time of day, before you start it the first time. That is the only time I check my oil, and I have been doing it that way for 42 years, for Fords, GMs, Chryslers, Volkswagens, one Vauxhaul, and a Mercedes Benz.