Coolant Intrusion issue — this is a known issue subject to a class action lawsuit. My vehicle was textbook — check engine light with accompanying code for a misfire on Cylinder 3. Then it would run rough upon starting. Next, the heater was acting up (on and off). Then billowing white smoke that smells sweet. Coolant reservoir was low, but not empty. Vehicle has 75,000 miles on it and is not drivable without a $7000-$9000 long block replacement due to the risk of fire. Called Ford customer service and was told the TSB did not even apply to my vehicle (as though a known design defect is related to a particular manufacturing facility).