I remember that grease Cren, from hangin out at the old shop my Dad had his taxis serviced in the 50's, almost like gooey oakum when it was dug outta the hubs

those taxis were mostly 52/3 Chevs and went to the shop by the clock like the book called for, for lube service and tuneups, ol Fred The Wrench took pretty good care of them
Bill