"In addition, more oil will drain out when hot, because the cold oil sticks to internal engine parts and flows to the bottom much more slowly".
The oil doesn't know you are going to drain it in the morning or cold. It heads to the pan everytime you turn the engine off. To a point the longer the engine is off the more oil drains to the pan. There is no less oil on the engine parts if you drain your oil in the morning after a car sits overnight then there is if your car sits overnight and you start it up.
Now stop and think about that. Before the oil gets "cold" it is hot. Hot oil will drain to the pan before it cools...even as and after it cools. The oil that is heading to the pan the night before you do a cold oil drain is just as hot as the oil heading to the pan when you do a hot drain. Any contaminants suspended in the oil are still suspended and heading and eventually ending up in the pan. The longer the engine sits, more hot or warm oil will drain (with contaminents) to the pan before it gets cold.
Now it maybe a insignificant amount, but I find it hilarious that people think more oil drains out when changed hot and allowed to drain for a few minutes compared to hot then warm oil draining overnight into the pan.
If particles are no longer suspended in the oil in the pan (doubtful) they will be flushed out when the oil is drained. Even cold oil flows out the pan quickly at least here in Southern California. If your "cold" oil is not flowing freely you are using the wrong oil or live in a place that is far too cold LOL
BTW the person who found black gunk for the first time after a cold drain...it is possible that the gunk you found would still be in the engine somewhere and would not have made it to the pan during a normal hot drain where the oil only drains for a few minutes (if that).
The oil doesn't know you are going to drain it in the morning or cold. It heads to the pan everytime you turn the engine off. To a point the longer the engine is off the more oil drains to the pan. There is no less oil on the engine parts if you drain your oil in the morning after a car sits overnight then there is if your car sits overnight and you start it up.
Now stop and think about that. Before the oil gets "cold" it is hot. Hot oil will drain to the pan before it cools...even as and after it cools. The oil that is heading to the pan the night before you do a cold oil drain is just as hot as the oil heading to the pan when you do a hot drain. Any contaminants suspended in the oil are still suspended and heading and eventually ending up in the pan. The longer the engine sits, more hot or warm oil will drain (with contaminents) to the pan before it gets cold.
Now it maybe a insignificant amount, but I find it hilarious that people think more oil drains out when changed hot and allowed to drain for a few minutes compared to hot then warm oil draining overnight into the pan.
If particles are no longer suspended in the oil in the pan (doubtful) they will be flushed out when the oil is drained. Even cold oil flows out the pan quickly at least here in Southern California. If your "cold" oil is not flowing freely you are using the wrong oil or live in a place that is far too cold LOL
BTW the person who found black gunk for the first time after a cold drain...it is possible that the gunk you found would still be in the engine somewhere and would not have made it to the pan during a normal hot drain where the oil only drains for a few minutes (if that).
