Ester-based lubricants contain typical synthetic characteristics but also provide their own specialties. Polyalkaline glycols (PAGs) also behave with the aforementioned properties, but they exceed in areas like viscosity index and have a very low tendency to develop deposits on machinery. They behave with the same characteristics mentioned but also provide excellent demulsibility (the ability to separate water) and hydrolytic stability (the ability to prevent water-based decomposition). Polyalphaolyphins (PAOs) are common synthetics. Fundamentally, both mineral and synthetic oils will behave similarly, but specific applications and additive requirements may be the key factor between which you should choose. In addition, these lubricants also demonstrate higher viscosity indexes. The second standout quality is that synthetics tend to provide excellent oxidative and thermal stability, which can have a direct relation to longer lubricant life. Synthetics are scientifically crafted to maintain ideal molecule bonds that produce a pure formula, whereas mineral oils are refined from crude oil that may pose issues with consistency. This includes but is not limited to, the age of the machine, history of lubricant related issues, susceptibility to contamination, and more.īefore discussing when you should choose one oil or the other, it's important to point out the qualities that make synthetics stand out. There is a tendency to choose synthetics because they are considered a better lubricant, but being able to identify lubricant related factors in your application is what should help you make a decision. But cost alone is not the only reason for choosing mineral oil over synthetic.īegin by searching for not the best lubricant, but the best lubricant -for. The most obvious reason for this is cost effectiveness, as mineral oils tend to be less expensive than synthetics. There are times when synthetic oils may be preferred, yet mineral oils are still chosen. That's because, in general, synthetic are superior to mineral based oil. More often than not, when it comes down to what's a better lubricant between mineral oils and synthetics, the answer is synthetic.
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