Advantages And Disadvantages Of Synthetic Oil

The components of synthetic oil are derived from crude oil’s most refined chemicals and molecules. Consider the following scenario: the world’s best elite football players from every position are brought together to play on the same team. It’s simple: winning and top-notch performance will be a way of life for such a squad. As a result, synthetic oil is a preferable choice for most engines. However, it does come with a slew of benefits and a minor number of drawbacks.

Let’s take a look at Synthetic Oil’s Advantages and Drawbacks.

What Is Synthetic Oil And How Does It Work?

Synthetic oil is a lubricant composed of chemical compounds synthesized by breaking down and reassembling petroleum molecules. A drop of conventional oil has millions of molecules of various forms, sizes, and configurations when examined under a microscope.

Full synthetic oils are manufactured from a synthetic base stock, are built molecule by molecule without the use of petroleum, and contain additives to aid in the breakdown of the oil. Traditional and synthetic base stocks are combined in synthetic blends. You receive a little more protection when you combine the synthetic base stock with standard mineral oil than when you use conventional oil.

Read more at: Can You Use Regular Oil After Synthetic?

Oil Types: Synthetic Vs Conventional

Synthetic or conventional mineral oil can be used in almost all automobiles. On the other hand, synthetic oils are frequently touted as having better performance than traditional oils. Synthetic oils outscored conventional oils by 47 per cent on average, according to the American Automobile Association (AAA). With approximately 70% of new automobiles in the 2019 model year using entirely synthetic or synthetic blend oil, synthetic oil is swiftly becoming the new normal. 

The development of synthetic oil has put traditional oil under the microscope. Even though standard oil properly lubricates your car’s engine in most situations, there are certain disadvantages to using it. Depending on characteristics such as marginal fluidity at shallow temperatures, thermal and oxidative stability, and viscosity protection at high engine loads and temperatures, these disadvantages may or may not be experienced or noticed.

Synthetic Oil’s Advantages And Disadvantages

When weighing the benefits and drawbacks, synthetic lubricants can provide significant benefits:

  • The viscosity index of synthetics, which is naturally higher, determines the film thickness or clearance between metal surfaces that slide or spin against each other. Friction and wear would be considered without this coating thickness.
  • Mineral oils are more volatile than synthetic engine oils. Between oil changes, you’ll require less makeup oil.
  • It lasts longer than regular oil and may be the most significant advantage.

The following are some of the drawbacks of synthetic oil to be aware of:

  • Synthetic oil is two to four times the price of conventional oil.
  • During cold storage, synthetics may be more sensitive to additive precipitation, culminating in full separation from the oil.
  • Mineral oils, in comparison to synthetics, require more viscosity index improvers.

Is The Cost Of Synthetic Oil Justifiable?

When it comes to the expense of synthetics or synthetic combinations, it’s not necessarily black and white. When it comes to the expense of an oil change, synthetic oil has a longer change interval, with most brands recommending a change every 5,000 to 7,000 miles. In most circumstances, oil changes are recommended every 3,000 to 5,000 miles. Suppose you’re planning to use synthetic oil with longer oil change intervals.

Premium lubrication may extend the life of your engine; however, if you plan to sell your car before it fails due to mineral oil, the benefit of using more expensive synthetics will be passed on to the next owner.

Digging Deeper Into Synthetic Engine Oils

Synthetic oil is manufactured from base oils, also known as base stock oils, which are commonly used in automobiles. The American Petroleum Institute (API) divides base oils into five categories; the first three are oils refined from petroleum crude oil. 

Because of their low cost and lack of downsides, SPAOs are the most widely utilized synthetic base oil today. PAOs are Group IV base oils with chemical properties similar to mineral oil. Because they are made rather than extracted, they are pure. PAOs have improved oxidation and thermal stability, as well as low volatility (potential for rapid change), good heat dissipation, a low pour point, and the absence of waxy components.

The interaction of acids and alcohols with the splitting of water molecules produces esters. The most common esters found in synthetic motor oil are diesters and polyol esters. Diesters are frequently used as a basic stock oil additive in PAO. Esters have a low pour point and strong thermal stability, but they have weak hydrolytic strength. 

When Synthetics Are Always Appropriate

Extreme conditions and worst-case scenarios necessitate the usage of synthetics. Synthetic motor oils are particularly well suited to the following passenger car applications:

  • Engines have a lot of power. 
  • She was driving at a high level.
  • Engines for luxury automobiles. 
  • It all starts with the bitter cold. 
  • Drains that have been extended. 
  • I am towing and hauling heavy loads.
  • Engine life is extended. 

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Pros And Cons Of Synthetic Oil

Oil types are divided into five divisions by the American Petroleum Institute (API). Conventional motor oils are in groups one through three. The fourth and fifth groups are made up of various synthetics. Synthetic oils with high-quality base fluids frequently use a combination of up to three different synthetic base fluids. In synthetics, the molecular structures are uniform in mass and shape. Any artificial manufacturer can develop designer molecules to create oil with specific performance characteristics.

Following are the advantages of synthetic oil:

  • Flow better in colder temperatures, making engine starts more accessible and providing better protection. 
  • They are withstanding viscosity changes at extremely high temperatures, which can cause molecules in conventional oil to break down or evaporate. Furthermore, synthetics resist viscosity changes at extremely high temperatures, which can cause molecules in traditional oil to break down or disappear. Metal-on-metal contact may develop due to this degradation, resulting in irreversible engine damage.
  • Synthetics enable smoother, cooler engine operation. However, that same super-slick consistency might aggravate existing internal or external engine leaks in rare situations, causing blow-by and burn-off. Keep in mind that this only happens in engines that already have leaks.
  • Synthetic lubricants are so slick that they inhibit the proper break-in of motor components in brand-new engines. Then there’s the undeniable reality that synthetic mineral oil is at least twice as expensive as traditional mineral oil. However, the longer intervals between oil changes balance the cost increase.


If price becomes a concern, semi-synthetic oil can be used instead. Before buying oil for your car, check the owner’s handbook to be sure it’s compatible. If you want to limit the number of oil changes, switching to synthetic oil is a better option. When compared to regular oil, it has a twice-as-long lifespan. However, the double amount is also applicable. You may always call the firm if you’re still hesitant.