confusing oil level indication

[blink21me]

Are you saying that when it's running at operating temp, that's when you check the oil and make sure it's at the FULL mark?

Or are you saying that right after shutting it down, you check the oil to make sure it's at the FULL mark?

I was saying to measure it after you shut the car off (I mentioned that in my first post in this thread), since you don't wanna attempt to do it while car's running, that, I'd say would take around three minutes after you shut the car off...

Like NazQ posted, oil expands when hot. So if you measure your engine COLD, and it's at FULL, it will register slightly higher when it's already at operating temperature and the oil is HOT because it has expanded. Thing is we don't see this because the rest of the oil is still in and around the engine so you'll read a lower level.

My thought is that even if the oil has expanded while the engine's warmed up, the reading will still run lower since a significant amount of oil goes up there; the difference between the area of the warmed up oil and cold oil covers ~ is less than how much oil would stay up throughout the internals when you just shut it off... so you would still want to make the reading while the engine is still warmed up...

On some diesel engines the turbocharger is cooled by the oil, and overfilling it will cause the gaskets and O rings to give in. This causes a runaway diesel to happen, the revs climb all the way up until the engine explodes or throws a rod. Overfilling is definitely to be avoided. So if I may ask you, how do you measure if one's engine is overfilled?

Overfiling is a no-no when it comes to all types of engine... I don't get the last question, maybe you meant to ask; how do I determine whether the oil reading is overfilled or not? As a response to that question, I'd still measure it when he engine is warmed up... Hhhmmm, that doesn't make sense, I've bees saying the same thing over and over, you can rephrase your question if you wish to...