To add to this, every manufacturer makes cars that will run say 10 years 100K miles. MTBF mean time before failure - or in this case catastrophic failure - water.pumps in the engine - PTU and transmission that will go out. The manufacturer doesn't state a service schedule for the PTU, why? 100k buy a new one, they want you to buy just a Taurus.I can see these platforms are problematic and expensive to repair unless the somewhat expensive and rigorous maintenance schedule is maintained. That's why we offer up the advice we do because it's a deep rabbit hole if you buy someone else's neglected SHO