My wife recently went to get the oil changed in our 2012 Subaru Outback, when she went to pick it up the clerk recommended a radiator flush and refill as the coolant level tested at -65 degree's. Is this even possible with out a loss of fluid in the system? (water) I too talked with the service rep who told me the same thing and thought that the fires in the area might have something to do with it. ??? I think this is just an up sell and decline any further service.