Additive in Kerosene is ruining wicks  I found the answer!
Channel: Artifactsofmars
Date: 2016-01-10

http://www.google.st/patents/WO2013030295A1?cl=en&hl=pt-PT
  Frustrated by constant denials from people, I undertook a search to find out what is being put into the kerosene that i ruining the wick. I believe I found the additive that is doing this. Essentially it destroys the capillary action in the glass fiber wick. I suspect but cannot prove yet Agenda 21 is involved.