Both Neatsfoot Oils (NFO) and Advance Technologies (AT) polyol esters are widely used as a lubricity additive for metalworking industry.  Unlike their vegetable or plant counterparts, our products are 100% animal-based, which are more thermally and oxidatively more stable due to lower Iodine Number that is a measure of double bonds in a molecule.  If you have higher temperature applications, say, constantly, over average 50o C in your fluid temperatures, you may want to consider our NFO and AT esters.  Steel or aluminum rolling uses NFO and/or AT esters for price, performance and biodegradability reasons.