you are right junior. ANother thing to keep in mind, water can withstand certain temperature before turns into gases; thus the idea of keeping it oil cooled is better.
However, that being said, I am assuming there will be somewhere a warning in the Owner's Manual reminding the driver to leave the car on for good 5 minutes before shutting it off when arriving to destination; just to cool the oil a bit.
If anyone can shine in on this.
