I applied more Fluid Film to the underbody, removed all four wheel well covers and sprayed there as well, along with replacing a few broken clips. I checked the oil and topped it up, burning around a quart per 1k miles but then noticed something weird with the radiator.
The coolant return line was backed-off the radiator quite a bit, I got pliers on the clamp and pushed it back on, but there is very little compression being applied from the clamp. I replaced both the supply and return hoses when I did the timing belt a few years ago. Used new clamps from Subaru, but the hoses were aftermarket (Gates), you can see that the engine side of the upper hose is clamped correctly, but the radiator side will not clamp any further
I am wondering if I should replace the upper hose, seems to be a bit too thick for the stock clamp. Note that it looks like is it still captured by the indentation that keeps the clamp open when you first buy it, but prying the clamp over that does not result in any further compression. I don't want to fiddle with it too much, that radiator plastic is 14 years old...