It is a concept where oil is used as a coolant. The oil is heated by the object it cools and then usually passes through a cooling unit such as an oil cooler. The cooled oil flows back into the hot object to cool it continuously.
-Oil has a higher boiling point than water, so it can be used to cool items at a temperature of 100ÃÂ°C or higher.
-Oil is an electrical insulator, thus it can be used inside of or in direct contact with electrical components.
-Oil is already used as a lubricant, therefore it may serve in a double use arrangement.