I have a coolant leak - fill up the reservoir and it will start dripping from the bottom of the lower oil pan (by the oil drain plug). Reservoir is drained within minutes. Looking at it it seems the coolant is coming from somewhere above the flange of the oil cooler. I was thinking to replace the oil cooler, but now I am thinking that a bad oil cooler would leak coolant into the oil and not to the outside.
Any idea where this leak could be and whether it is worthwhile to replace the oil cooler?