The internal combustion engine relies on oil to function.
The transmission oil lubricates the different parts in the transmission to ensure they are protected against heat and friction.
Having a smooth running car is no accident.
The oil in your car’s engine is important because without it there would be no lubrication for the internal components of the car.
The transmission oil cooler hose on a car helps to carry the transmission fluid from the transmission to the transmission cooler.
All internal combustion engines rely on some form of engine lubrication to keep the metal components of the engine from overheating and becoming damaged due to metal on metal contact.