Gold mine’s initial problem was that a set of bearings had score marks causing the operating temperature to rise and no replacement bearings were available for approximately 2 weeks. They turned the white metal bearing caps around, i.e. top to bottom, cleaned the old grease and contamination out, filled with Prolong EP-2 Grease and ran for 4 weeks until a scheduled repair could be done with new bearings. They only run on EP-2 now, but use far less for longer than the old type of grease with better bearing life.
Gold Mining Group, South Africa