There are many reasons you may find yourself here and reading this article, but at a guess it's because you’re on the hunt for a noise or rumbling from your bike. It might be a creaking or cracking noise, or an intermittent one after 23 minutes of riding at a particular temperature. But whatever it is, chances are you may have a bearing that’s screaming out for help and most likely some lubrication. In most cases I recommend that if you’ve gone to the trouble to get it out and it feels terrible, pop
