Looks like # 2 Son popped the head gasket in his 2000 2.5. Went out earlier when he told me something was wrong so we cranked her up and she was blowing white smoke out the exhaust. I told him to shut down, and then I got a high pressure bath from the radiator cap after she ran for about 30 seconds, so I'm guessing the radiator was pressurized by one of the cylinders. No water in the oil pan as it looks clean so I suspect the gasket was compromised between one of the piston and the cooling system. He is out there in the garage now stripping everything off so the head can be pulled. Must be 90 degrees out there right now.