okay the other day when i changed my oil i started it up and it ran fine took it for a test drive and everything no smoke nothing. so then the next day i wake up and go start my car and i noticed that my car was just covered in smoke and i was like what the hell is this. so i raced the enging to see if it would clear up in which it did but when ever i let my car sit for a few hours then start it blue smoke is pouring out of the car. the smoke is coming from the exhaust and under neath the hood well it looks like it is coming from underneath the hood but that could be from the exhaust and it lingers under there. well if any one has any thought on what it could be that would be very helpful.

Thanks