It is my understanding that sperm whale oil, that which comes from the head cavity, was used primarily in the manufacture of various perfumes. The oil rendered from blubber or whale fat is simply whale oil. Oil that is 'tried' out of the fat of other mammals makes wonderful patch lubricant. My experience has been with oil from black bears, marmot, and neatsfoot oil. All work well as advertised with marmot oil #1.