Helping a friend find a new car. She was looking at Honda CRV but sat is a Subaru Forester and liked it for better rear and side visibility. Don't know much about Subaru. A quick search showed thermal control valve is a costly repair. I read it is a dealer repair only, is that true. Not sure how common. How reliable are they especially 150k+ miles. Would buy low mileage certified but she plans to keep it long term. She would buy the Honda if the Subaru is dramatically more unreliable. She is going to reach out to her independent mechanic to see if he is familiar with them as they are not as common as Honda. Is that a thing where they require some expertise to work on??