United Kingdom & Ireland
Synthetics lab

Synthetics lab

What are synthetic oils and what do they do?

Your engine is a complex machine with hundreds of moving parts that operate under a wide range of temperatures and stressors. The oil you select needs to be equally capable of coping with these operating conditions to protect your engine against wear, corrosion, and the build up of dirt and deposits.

Lubricants heavily influence: Performance, Fuel consumption, Emissions
Lubricants are responsible for: Wear protection, Engine cleanliness, Long engine life

What is synthetic oil?

Synthetic oils are engineered to provide greater protection against engine wear and high temperatures two factors that can cause an oil to break down and be less effective. Lower viscosity synthetic oil also produces less resistance in an engine, so engines using synthetics will have more horsepower and greater fuel efficiency compared to those using a conventional oil.

Types of synthetic oil:

There are two types of synthetic oil: semi synthetic oil and fully synthetic oil. Here’s the difference.

  • Semi synthetic oil is a mix of conventional motor oils and synthetic base stocks. Think of it as a cup of half decaf and half regular coffee. Because of the added synthetic base stock, you’re going to get more performance and protection than you will by using a conventional oil alone.
  • Fully synthetic oil contains no conventional oils. Instead, they use a synthetic base stock mixed with a variety of additives that boost the performance of the oil and offer excellent engine protection. This mix of high-performance fluids and additives help prevent wear, help keep engine parts clean, flow easily, maintain viscosity, prevent rust and reduce friction.

The result is a lubricant that remains liquid and slippery under a wide range of temperatures and engine conditions. Plus, because synthetic oils also are more durable, they last longer, so you don’t have to change your oil as often.

What's so good about Mobil 1 synthetic lubricants?

The performance of synthetic oils, and in particular Mobil 1, is more robust, especially in terms of low temperature pumpability and high temperature stability and protection against deposits. These attributes translate directly into less engine wear, increased fuel economy and longer engine life.

Synthetic oils have been developed specifically to cope with extreme conditions found within modern engines. They are much more free-flowing than traditional mineral oils. The biggest benefit greatly increases engine protection. When an engine is first started, a mineral oil takes some time to circulate, allowing friction between un-lubricated parts to cause wear. In contrast, a synthetic lubricant starts circulating straight away, protecting every moving part within the engine.

Synthetic oils can also significantly improve fuel economy.* During the warm-up period of a typical car journey, mineral oils are thicker and move slower, making the engine thirstier and less efficient. Because synthetics get to work much quicker, the engine reaches peak operating efficiency that much sooner.

Another advantage of synthetics is that they're cleaner and environmentally-friendlier - helping to cut engine emissions when compared to conventional mineral oils. Conventional mineral oils also contain greater amounts of impurities, such as sulfur, reactive and unstable hydrocarbons and other undesirable contaminants that cannot be completely removed by conventional refining of crude oil. In all these important respects, synthetic lubricants easily outperform mineral oils. As a 100% synthetic oil, Mobil 1 offers significant advantages over conventional engine oils, such as:

  • Outstanding protection
  • Cleaner running engines
  • Minimizing oil degradation
  • Engine efficiency
  • Faster lubrication at start-up in low temperatures
  • Greater resistance to oil oxidation (thickening), which reduces engine drag
  • Excellent protection at high temperatures
  • Lower oil consumption under high-speed conditions
  • Exceptional resistance to thermal breakdown
  • More efficient engine operation over a wider temperature range
  • Engine cleanliness
  • Outstanding protection against harmful deposits

Learn about Mobil 1™


Why synthetic oil?

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