OIL COOLER
2016 – MX-5 – Transmission/Transaxle
OIL COOLER
Purpose/Function
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The oil cooler constantly maintains maximum ATF performance in the transmission by maintaining an optimum ATF temperature which has the effect of achieving reduced fuel consumption.
Construction/Operation
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A water-cooling type AT oil cooler is adopted and installed in the radiator.
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The oil cooler performs the following operations according to the ATF temperature condition:
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Heating function: Warms the ATF using the radiator coolant to promote an earlier increase in the ATF temperature when its temperature is low. As a result of the earlier temperature increase, the ATF viscosity decreases which reduces drag in the transmission.
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Cooling function: Cools the ATF using the radiator coolant to maintain optimum conditions and prevent ATF expansion and deterioration.