speedometer/cable noise - help requested

So I just spent an hour on line looking for graphite cable lube: Dorman 03344, NAPA 765-1376, AMG's AMZ-03344, etc. There are listings galore but they all say Out of Stock - no indication of when it might be available. The only thing I could find was Motorcraft PTFE lubricant XG-8 grease which is specifically listed for speedometer cables. Any thoughts on this product?