Oleic acid polymerizes on the presence of oxygen, catalyzed by lead and other metals, and faster, the higher the temperature. Yes you can delay it by piling in antioxidants, but but it doesn't make sense to me do so.quote:
Originally posted by MolaKule:
I respectfully recommend you do a search in the Patent Office, SAE, and TLT (STLE) on new Anti-Oxidant developments for bio-based lube oils.quote:
Sorry to say but High Oleic Safflower or Sunflower 85% Oleic, WILL even with a good 1-1.5% BHT AO form a "gooey castor oil type sludge".
I'll even give you a hint: RTV's Vanlube 9317 and VanLube 8610.
Do searches on Renewable Lubricant's as well.
I know a little about this subject, I have a degree in chemistry, and spent 10 years of my life making resins for use in paint. True the more oleic acid in a oil, the less it polymerizes, but tall oil with 46% oleic makes fine paint, drying to a hard film. Do some research on drying oils.