I know this has probably already been discussed but it has been bothering me for 2 months. Everytime my car was HOT i noticed when i got out of my car that it had a sweet coolant smell. Could never find a leak. Always had this white/pinkish trail down the side of my block near the thermostat housing, thought is was the runoff from when i blew off my shitty plastic vent cap on the top hose (another story). But no i finally found it. Its that stupid block plug right next to the thermostat held in with 1 bolt. Changed it and that was the end of that. Hope this helps somebody.