I've noticed that at low speeds like 10mph or below(or maybe that's the only time i can hear it) my front axle has a squeaking and some times grinding sound coming from it. Theres nothing tahts obviously scraping against it or any thing. also it seems it happens when its wet outside, i've never noticed it when it was dry. also it seems to have become more prevelant. is the some lubricant that might have washed off? and that wouldn't explain it happening when its wet. any ideas? somethings I might check for?