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Suits: Nissan Patrol GU Y61 with ZD30 CR engine
The ZD30 Motor has 2 oil pressure switches a 15psi one and a 25psi one.
It is not Un-Common for them to give trouble and cause the oil warning light to come on
On the common rail motor they are different form one side to the other, and cannot be interchanged.
This is the one fitted above the starter motor on the drivers side
Warning: if your oil warning light comes on, DO NOT assume there is a fault with your switch, and have the oil pressure checked properly before driving the car.