Outer Limits 4x4 Board

My 2.8 GU has a bad oil leak at the front of the motor , looks like it is coming from behind the air con condenser but my mechanic is unable to pin point the source, could it be coming from the oil pressure sender if so where is it located as we cant find the bugger Thanks

mate on my 4.2 the sender is on the driver side about half way down the the engine and it has an electric conection on it and its before the oil filters

hope that helps