same thing had happend to me, i've blown my engine at 80000 and had to repleace it, spent $2500 for engine(40000 miles) and labor because it is impossible to change this emgine by yourself, i mean you have to strip it down about %50 just to take it out same with putting the new one in. one diffrence is i have a regular duratec 2.5 V6 non SVT.
good luck
