February 9, 200917 yr Want to change thermostat . Would a bad one make hoses colapse when car cools down ???? thanks
February 9, 200917 yr Is the coolant topped off? If you do change the thermostat, use an OEM one from Subaru
February 9, 200917 yr Change the hoses! The engine pulls coolant back into the engine when it cools. You should be able to see this if you check the coolant level when hot and then recheck when its cold. You might also want to change the radiator cap.
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