see in the winter the cold makes the o ring (probably rubber)contract a bit. similar to the hood strut situation. i've have a squeek in the front end of my infinity for about 5 years now. my mechanic said something like "well, you can spend a few hundred bucks replacing rubber parts in the front end until we get the right one, or you can throw some silicone lube on it and wait till spring. spring, ahhhhhhhhh spring. maybe we should all move to lousianna or florida, eat stone crabs or crawdads and forget this awd stuff!