What is an oil cooler?
The engine oil cooler
looks a little like a small radiator. Its purpose is to maintain the engine oil
at a consistant temperature. It is important your engine oil is kept at a temperature between 82 and 93°C. If the temperature rises above the maximum limit, the oil loses its lubricating property and can no longer function as a coolant.
A number of car parts, particularly those located at the bottom of the engine compartment, including the crankshaft, and the camshaft
, are not cooled by cooling fluid but by engine oil. The engine cooler ensures the oil can absorb these parts’ heat.Oil coolers
come in two types: tube and fin or stacked-plate. The first works a lot like your car radiator
: the hot oil flows through the cooler tubes. The fins ensure that the heat dissipates. In a stack-plate oil cooler, the oil flows through a series of plates. The cooling process works with air moving across the plates. The latter system tends to be less effective than the former.