Was on a toll road pushing the accelerator to the floor and when it hit 65 it started slowing down. It was very windy and I thought that was doing it. Then I noticed a slight antifreeze smell and saw white smoke coming out the back but not from the hood where I normally see effects of blown radiator hose. The jerks on the road kept me from getting off until I drove about 7 miles and got to a gas station. Opened the hood and saw the overflow bottle had thrown its lid and was boiling profusely. Let it cool down, filled the radiator with a lot of water, thought that was it and I drove a little further to Post Office. More white smoke and the engine seemed rough. Got mail, went to a nearby restaurant to let it cool for a about 45 minutes, then drove home with more of the same rough engine and white smoke. Just installed new high performance distributor three days earlier and the engine was running better than it ever had since I've owned it before this event. Did I blow a head gasket? Worse? What is your opinion? -- tm / Houston / 85 Jeep Cherokee, 2 dr. 2.5L, 4x4 "Reality is merely an illusion, albeit a persistent one." -- Albert Einstein

Blown head gasket or cracked head.

Pull the head and check it out.  I wouldn't drive it anymore, but you don't want to let water sit in any combustion chambers to long.

Andy