So 2 weeks ago, sitting in 95 degree weather in traffic with A/C on, I noticed my temp light on and my temp gauge all the way to the H. I glance at my AP to check coolant temp and see its around 250. Pull over, max defrost on, A/C off, open hood and let her idle then turn the car off with the acc on to keep the fans running. I took it into the dealership where they had the car for a week and could not replicate the issue with no answer...gave it back. Yesterday, in the same scenario and weather, the car decided to over heat once AGAIN. This time, I see smoke billowing out from under the hood. Same steps as before but this time I notice that coolant is sprayed all over the driver side engine bay near the battery. Temps reached 248. I did switch from 5W-20 to 5W-30 last week after I got the car back from the dealer thank God. Called Ford and had it towed into the same dealer last night. Dealer could not replicate the problem again and stated the there was a plastic coupler leading to a metal coolant hose that blew. Ford tech line had no answers just like last time for the dealer after all tests were ran and completed. What to do? I am worried that the coolant line that blew was the turbo coolant feed...should I be worried? Service writer did not know if it was or not when I asked. Dealer is thinking its a possible cooling system restriction. What are your thoughts? I immediate worry is the long-term dependability of the car with it overheating like this twice. Should I be worried?