Today we're going to take a look at the Flex-a-Lite heavy duty engine oil or transmission oil cooler. Now this heavy duty oil cooler can be used for engine oil cooling or even transmission oil cooling. Basically your engine functions at its best when the engine oil is usually between 180 and 200 degrees. Now engine oil will act as a coolant as well as a lubricant. If that oil gets too hot, your… see more >