Yeah, the best thing here would be to replace the car. I have a friend who works at https://transmissioncoolerguide.com/best-transmission-cooler/ and according to him the transmission system is the first system which when it fails leads to an imminent replacement of the car. Following his advice it is recommended to start looking for a new car when your transmission starts causing trouble. According to him - unless you are ready to invest about half of the car's price into properly repairing the transmission.
