![]() Excess engine temperature will overheat the CVT fluid and may cause premature failure. It is also important to inspect the engine air filter and replace it if dirty or obstructed. Make sure the engine coolant lines are not obstructed and coolant can freely flow into the CVT warmer/cooler. Per the Nissan service manual engine coolant must be replaced at 105,000 miles or 84 months, whichever comes earlier. To prevent the CVT from overheating, inspect the engine coolant and replace the engine coolant if it is degraded. During extended operation, the exchange provides a cooling effect as heat from the CVT is exchanged into the engine coolant. After starting the vehicle, the engine helps warm the CVT fluid to operating temperature. The CVT oil warmer/cooler has two closed loops to exchange heat between the CVT and the engine.
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