1. Antioxidants can and should be added to fats and oils, especially liquid fats and oils. 2, It is recommended to add liquid antioxidant with 99% purity and 500g/ton. 3、Add it to the oil tank before filling oil to facilitate mixing. 4、Powder antioxidant can also be added. If you are refueling by hand, no problem, if you are spraying oil through the oil circuit, it is easy to cause clogging of spray nozzle. 5, solidified grease is not necessary to add antioxidants, because the external environment, not easy to oxidize. 6, such as high trace element formula, not only the grease should be added, the ingredients must be added to prevent oxidation. 7, but also pay attention to the amount of water in the oil, high water is easy to deteriorate, need to add a large amount.