If someone has the time, could you please explain to me, the purpose of putting oil in the pickle bath? If you practice this, could you please state the charge of the oil. Un-charged, cationic, or anionic. I could be wrong, but this practice seems to be a waste money, not to mention the fact that it could possibablly have undesirable effects on tan fixation. Is there anyone else with an opinion on this practice?