it cools oil by circulating it thru an external cooler and works on the same principle as your radiator hot oil flows thru the cooler and is cooled by air thus "oil cooler"
A water cooler usually refers to a water dispenser that chills the water. Some people also refer to a water fountain (one of those things you drink water from in public buildings or parks) as a water...
If your vehicle has an engine oil cooler ther will be two hydraulic lines going to each side of your radiator. If there are only lines going to one side of your radiator, then it doesn't have an...