Air To Oil Cooler

oil cooler
A heat exchanger for cooling oil. Most automatic transmissions are equipped with an oil cooler that's located inside the radiator. Since the radiator usually runs close to 200 degrees, the amount of "cooling" this kind of setup provides is questionable.
This looks like a small Radiator used to cool off the engine oil or the Automatic transmission fluid. As air passes through the cooler, the temperature of the oil in the cooler is reduced. Some units reduce the temperature of the manual Gearbox and Differential lubricants in racing cars.

air
air out: expose to fresh air; "aerate your old sneakers"
The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
be broadcast; "This show will air Saturdays at 2 P.M."
This substance regarded as necessary for breathing
The free or unconfined space above the surface of the earth