I still haven't fixed it - might get to it today. The main reason I haven't gotten to it yet is because I crawled under there yesterday with a flashlight and there are fluids everywhere! I started it up and watched - there's the oil cooler leak. But the upper rad hose is leaking, power steering hose is leaking, radiator cap is leaking and a trans cooler line is leaking, and the carb feed is leaking at the fuel pump!
I tightened up the fuel line and that stopped it. The upper radiator hose and trans cooler line are tough to get at so I called it quits.
The one thing I did do while I was under there was replace the oil pressure sender. The old one had the gauge pegged at 60 PSI all the time. Now that the gauge is working, I can see that the oil pressure is still pretty high - close to 60 above idle. Drops slightly at idle but still on the high side of the gauge. I'm not sure if that's okay or not? Maybe why the oil cooler gasket is leaking?