heavy white smoke from exhaust...

[PKRWUD]

jetuomi-
The symptoms you described indicate that your engine is very healthy. In a perfect world, your exhaust would be pure H2O. That's what the cats turn the HC, CO, CO2 and O2 that are in your exhaust, into. This is why newer cars leave puddles under the tailpipes in the morning. As the pipes heat up, the water turns to steam, which is why you see steam coming from the exhaust of cars that are either cold, or are driving in a very cold climate.

When your car stops making water when it's cold, is the time to worry.

Take care,
-Chris