Fluids leaked into engine. Overheated and died on highway drive home no check engine lights were on prior. 2nd and 4th cylinder misfires. Spark plug welded and cross threaded and needed to replaced but when when it was attempted it broke off in engine due to being welded. Due to the original issues and all of those caused from them this vehicle is NOT SAFE; even if this was able to work again it is NOT SAFE! It was a family car and we do NOT trust for our families safety!! (Had car towed to repair the next day and has been inoperable since without either new engine or engine rebuild.)