FOR THE SECOND TIME IN THE 40K MILES THAT I HAVE OWNED MY NEW FORD EDGE THE PTU SEAL HAS FAILED. THIS TIME WHEN THE DEALERSHIP TOOK IT APART TO REPLACE, THEY FOUND METAL SHAVINGS INSIDE, SO THEY ARE REPLACING THE ENTIRE UNIT. HORRIBLE SMELL, VERY CAUSTIC, MAKES MY NOSE BURN. HAPPENS AFTER DRIVING AND WHEN YOU COME TO A STOP OR SLOW DOWN THE CABIN FILLS WITH A NOXIOUS SMELL.