Hello
@aret007 Welcome tot he forum and congrats on your 28 Catalina.
@sail sfbay has provided some good links.
My thoughts about cleaning grease from equipment, is to use diesel fuel in a pan and put the bearings or other parts into the pay. I use an old tooth brush to move brush the diesel on the parts. The process works pretty well. Diesel being an oil can be dumped in our marina discharge containers. Gasoline... No.