Reallllly like my '98 XC70 5cyl Turbo, but recently it's starting melting ignition rotors. The the heat shield directly below the rotor is intact. And it continues to melt rotors. The car is great to look at in the driveway, but I've been stranded with it twice in the last two weeks and I'm not sure I'm brave enough to venture out in it again until I have an idea how to correct the problem. Help!