What is Synthetic Oil? It is a chemically produced lubricant made from petroleum and other raw materials. There are three types of synthetic lubricants: Group III, Group IV, and the hybrids. To learn more about each type, read on! Listed below are the benefits and disadvantages of each one. Once you’ve decided which is right for your vehicle, you can start shopping. The best synthetic oil for your vehicle may be right around the corner!


The first synthetic oils were developed in 1930 to address problems caused by improper refining processes and poor properties. This group of synthetics were able to outperform traditional motor oils by as much as 47 percent. The AAA chose tests that measured key physical, chemical, and performance properties. Among these, they measured the ability of the oils to resist oxidation, deposit formation, volatility, cold temperature pumpability, and oxidation-induced viscosity changes.


The most common types of synthetic oils are Group III mineral oil and Group IV oil. The latter two are a mixture of Groups I and IV. Most OTS synthetic oils are of this type, which are close to Group IV oil in performance. They can be found in brands such as Mobil 1 and Amsoil 0w20. However, there are some differences. Listed below are some of the main differences between Group III and IV synthetic oils.

Group III

There’s some debate about the difference between Group II and III synthetic oils. Some purists refuse to recognize the Group III oil as a synthetic, while others are not so fussy and use PAO instead. Although base oils are important, the performance of motor oil is what’s most important.

You want to purchase motor oil that is backed by industry-standard testing and real-world results.

You don’t want to buy a subpar oil because the label says it’s a Group III synthetic oil.

Group IV

Group IV synthetic oil refers to fully synthetic fluids. They are produced by synthesizing polyalphaolefins (PAOs) and are known for their consistent weight and molecular size. This gives them predictable properties and gives them a wide temperature range. This makes them ideal for cold temperatures and high shear strength. They are a good choice for use in vehicles with high viscosity indexes.

Group V

Group V is the catch-all category for base oils that are not classified as being part of Group I, II, or III. This group includes silicone, polyalkylene glycol, and polyolester, and sometimes other base stocks. These oils are often used as additives in motor oil and don’t have the same performance characteristics as Group I and II. If you’re interested in learning more about Group V and what it can do for you, continue reading this article.

Group VI

This type of synthetic oil is made up of polyalphaolefins, which are manufactured hydrocarbons with low molecular weights. Typically, these oils contain C10 or C12 carbon. Group VI synthetic oil, on the other hand, is made from linear olefins made from C15 or C16 carbon. Group VI synthetic oils can withstand high temperatures, and some types of Group VI oils are mixed with other base oils.

Group VII

There are two main types of synthetic oil: Group VII and Group IV. The first type is the most commonly used and contains the highest concentration of PAOs (polyalphaolefins). The other type is the least common and is composed of long polymer chains, such as ester base oils and diesters. Some Group III and Group IV petroleum oils are also marketed as synthetics.

Generally, these types have properties that are similar to Group VII synthetic oil.

Group VIII

While synthetic motor oil is not made from petroleum, it is a refined version of base oils. Group IV, V, and VIII are categorized by the American Petroleum Institute (API). The first three are made from petroleum crude oil; group VIII is fully synthetic. Base oils that aren’t in the first four groups are called Esters or Polyalphaolefins. They’re not the same thing as synthetic motor oil, but they do have similar properties.

Group I

Group I synthetic oil is a blend of various base oils. It is a high-performance lubricant and contains virtually no contaminants. Group II base oils are similar to synthetics. Group III base oils are a blend of several types of oil. They offer excellent low and high temperature performance. Some companies are more careful with Group I synthetic oil than others. They can be misleading. It’s important to look at the full list of the group before you buy.

Group II

Industrial oils are usually Group I base oils. However, Group II synthetic oils have become increasingly popular in recent years. Group II oils are produced through a process known as hydrotreating, which uses hydrogen gas to strip crude oil of undesirable components. Hydrotreating produces colorless, clear base oil with very little sulphur, nitrogen, and ring structures. These characteristics make Group II oils a good choice for various applications. Here are some of its benefits: