One of the best bits of advice Martin and Dave at SSS have given me is to stop listening out for and worrying about general noises it makes lol! Subaru's - especially older ones - are just generally noisier cars than most and just sound more mechanical more of the time. You'll know when it's a sound that's something's wrong, if it's a noise you're not sure if it's a problem or not, it'll most likely be absolutely normal and nothing to worry about. ;) Still, saying that. Doesn't stop me worrying completely and still get them to check out most stuff haha!