Product review (5 stars): Exciting commentary on mixer grease.
Grease.  This is required when rebuilding a KitchenAid mixer.  The manufacturer does not recommend reusing the grease that is in the mixer when it is disassembled so I replaced it.  The grease itself was greasy, which is what you would expect from grease.  While I just finished doing the rebuild, you can all wait for my weekly updates on how the grease is doing.  Or you could just watch your grass grow.