I am interested in a 96 outback legacy wagon...It is my friends car ...We start the car up and it drives and idles fine then after 10 min of driving the temp gauge rises to about 3/4 and starts to over heat , but i can park the car and with the fans running it stays at 3/4 up on the gauge...so who knows..maybe i will change the thermostat....Also that subaru additive is that only to prevent against failure or will it cure it for a little while..?