首先要有出色的润滑性能，其次必须符合相关的食品安全法规要求才能称之为食品级润滑油。食品级润滑油和普通润滑油大的区别就是其组分，包括基础油和添加剂都是无毒无害的，偶尔和食品接触到也不会污染食品，仍然可以确保食品的卫生安全。由于食品级润滑油是专门针对食品机械的工作环境，如高/低温、高湿度等设计配方的，一般要求非常好的抗氧化、耐高低温和抗乳化性能。不少国内的中小型食品加工企业，特别是华北地区的。其中有不少人提到必要时会用猪油、花生油和色拉油来润滑食品机械，以满足他们认为的无污染要求。这是一种观念上的错误，也许和国内目前没有明确的法规和宣传有关系。且不说其润滑性能远远比不上专业润滑油，这些东西在高温高湿环境下使用，很快就会长细菌、发霉变质，产生有毒有害物质，从而污染食品。

在食品企业冷库工作的链条，如果没有耐低温的链条油，就会因为润滑油冻住而无法正常运转。很多食品机械特别是肉类加工厂，每天都要用大量的水来冲洗设备，溅到设备润滑点的水很容易被普通润滑油中的添加剂吸收，导致润滑油乳化，进而在高温下发生油品氧化反应，产生结焦、油泥和胶状物质，使润滑油很快变质失效，润滑失败，造成机械损坏。

First of all, it must have excellent lubrication performance, and second, it must meet the requirements of relevant food safety regulations before it can be called food-grade lubricants. The biggest difference between food-grade lubricants and ordinary lubricants is that their components, including base oils and additives, are non-toxic and harmless. Occasionally, they do not pollute foods and can still ensure food safety. Since food-grade lubricants are specifically designed for the working environment of food machinery, such as high/low temperature, high humidity and other design formulas, they generally require very good antioxidant, high-temperature and anti-emulsifying properties. Many domestic small and medium-sized food processing enterprises, especially in North China. Many of them mentioned that lard, peanut oil and salad oil are used to lubricate food machinery when necessary to meet their perceived pollution-free requirements. This is a conceptual error and may be related to the current lack of clear regulations and propaganda in the country. Not to mention that its lubrication performance is far less than that of professional lubricants. These things are used in high temperature and high humidity environments. Soon, bacteria, molds, and spoilage will grow, producing toxic and harmful substances, thus contaminating food.
The chain working in the cold storage of food enterprises, if there is no chain oil that is resistant to low temperatures, it will not be able to function properly because the oil is frozen. Many food machinery, especially meat processing plants, use a lot of water to flush the equipment every day. The water splashed on the lubrication point of the equipment is easily absorbed by the additives in ordinary lubricants, causing the lubricant to be emulsified, and then the oxidation reaction of the oil products occurs at high temperatures. The production of Coke, oil mud and colloidal material, so that the lubricant quickly deteriorated, the lubrication failed, causing mechanical damage.