WAS DRIVING AND MASSIVE AMOUNTS OF ANTIFREEZE LEAKED OUT OF THE BACK ONTO THE ROAD AND ON MY TIRES. ENGINE THEN STARTED TO SMOKE AND OVERHEAT. COULD HAVE BEEN VERY DANGEROUS. OVERFLOW RESERVOIR CAP WAS SCREWED ON TIGHTLY SO THAT WAS NOT THE ISSUE. I READ THAT THERE WERE SOME ISSUES WITH THE 2001-07 PORSCHE 911. MY ENGINE WAS REPLACED IN 2003 SO PERHAPS IT WAS RETROFITTED WITH THE PROBLEM PARTS. IT WILL BE AT THE RAY CATENA PORSCHE DEALERSHIP IN EDISON NJ TOMORROW FOR REPAIRS. *TR