Product review (5 stars): New and Improved OEM part
Be careful of "genuine replacement parts", they are not OEM. This is a new and improved OEM part. This part is not supposed to be lubed in any way, it will only attract lint and gum it up. The OEM wheel is made with a self lubricating metal and should be kept clean. That's the difference, the OEM is made with this self lubricating metal, the others I've seen are regular metal, lubed with grease and will not last as long.  If you have one of these and it's squealing on you, gently pry off the plastic retaining ring and clean the shaft and inside of the wheel with alcohol, put it back together' and try it, if it still makes noise it needs to be replaced.