93 4x4, 5.2 automatic. Truck seems to run ok but radiator leaks into the oil. Happened real fast, in about two miles. I didn't hear anything wrong, then or now. I think its just the intake gasket but a friend says its more. I can't believe it would still sound like its running good if its something serious. Any thoughts? It does have 150,000 miles on it.

 

I would stop driving the truck before you burn up the bearings. If your engine oil is tinted a milky green, there is some serious contamination that could ruin your engine. You could have a bad head gasket or intake gasket that corroded between an oill and coolant passages allowing coolant to enter the oil. I'd replace both head gaskets while the intake is off then use a bead of silicone on the intake gaskets (the small pieces on the front and back).