While it is great to have a car that starts every time and goes as fast as possible, it is also important to take care of your engine so that it continues to work just fine well into the future. Engine oils help to provide added performance and protection for your engine, and which one suits you best depends upon your specific requirements.

There are many different engine oils on the market to choose from and it can be difficult to know which one you should choose, so we have made this guide to help you to find the best synthetic oil.

Top 10 Synthetic Oils Ultimate Chart

PictureNameStandards MetPriceOur Rating (1-5)
Standards Met
Our Rating (1-5)
1. Mobil 1 (120769) High Mileage 5W-30 Motor OilACEA, A1/B1, API SN, SM$$4.9
2. Mobil 1 (120766) Extended Performance 5W-30 Motor OilILSAC, GF-5, API SN, SM, SL, SJ$4.9
3. Mobil 1 120762 Synthetic Motor OilILSAC GF-5$$4.9
4. Shell Rotella (550019921) T6 5W-40 Full SyntheticAPI CJ-4$4.8
5. Pennzoil 550038221 Platinum 5W-30 Full Synthetic Motor OilAPI GF-5$$4.8
6. Mobil 1 120764 Synthetic Motor OilILSAC GF-5$4.8
7. Mobil 1 (120765) Extended Performance 5W-20 Motor OilILSAC GF-5, API SN, SM, SL, SJ$$4.8
8. Mobil 1 120758 Advanced Full Synthetic Motor OilILSAC GF-5$$$4.8
9. Mobil 1 120760 Synthetic Motor OilAPI SN, SM, SL, SJ$4.8
10. Castrol 03087 EDGE Extended Performance 5W-30 Synthetic Motor OilILSAC GF-5, API SN, ACEA A1/A5, ACEA B1/B5$4.7

What to Look for When Choosing a Synthetic Oil

Synthetic engine oils generally perform better than natural alternatives because the research and manufacturing processes are more complex and costly. They still do pretty much the same job though and offer 4 main benefits to any engine:

  • Improved performance.
  • Better reliability.
  • Smoother operation.
  • Added protection.

Different oils tend to offer a different balance of these factors and what you choose depends on your individual needs. You will need to take into account the type of engine you are using, the way that you use the engine and how often you use it. You should also take into consideration specific requirements if you have and old engine that has seen a lot of mileage.

Quite often, engine manufacturers will stipulate certain minimum requirements on which kind of oil you should use. You will often see figures such as “5W-30” which indicate how well the oil will perform under certain temperatures and certain grades need to be used if warranty conditions are to be met.

Top 5 Synthetic Oil

1. Mobil 1 (120769) Motor Oil

Mobil 1 (120769) high mileage 5W-30 motor oil is designed specifically for older engines that have seen a lot of mileage, and it can really help to bring them back to life. In addition to helping rejuvenate them in terms of performance, it also provides protection to help extend their life even further.

Using this oil also helps to reduce any build-up of sludge in older engines, and also helps to prevent leaks that might occur in older engines. Engine noise is also reduced considerably, helping further to make you engine run as well as when it was first made.

Users have found that this oil outperforms other high-mileage oils and it is considered to be among the best synthetic motor oil products available on the market today. If you are an owner of a car that has seen a lot of mileage and is need of some rejuvenation and a little TLC, Mobil 1 (120769) high mileage 5W-30 motor oil could be exactly what you need.

2. Mobil 1 (120766) Motor Oil

If protecting and preserving your engine so that it continues to work as good as new for as long as possible is a priority for you, then Mobil 1 (120766) extended performance 5W-30 motor oil is just what you need. Specifically formulated with engine protection in mind, this oil will increase your engine’s longevity while significantly reducing the need for repairs and maintenance.

This oil remains effective up to 15,000 miles and also helps engines to start on those cold winter mornings. In addition to providing protection to the engine components for a longer engine life, it also helps to ensure that everything is running smoothly while also providing a boost to performance.

Using the right oil in your car’s engine can help provide smoother running and could potentially save you a lot of money on repairs in the future. For a motor oil that helps to provide as much protection as possible, Mobil 1 (120766) extended performance 5W-30 motor oil is just what you have been looking for.

3. Mobil 1 (120762) Motor Oil

For a motor oil that helps to provide a smoother running engine along with added protection then Mobil 1 120762 synthetic motor oil 10W-30 is one of the best options for you that are available on the market. In helping your engine to run as smoothly and efficiently as possible, this motor oil also helps with fuel economy, meaning you don’t have to fill your tank as much as you used to, while will help to help to start saving some money straight away.

Superb at helping to provide performance and reliability at cold temperatures, it is ideal for people that live in cold climates and for those cold wintry days. It can also be used by people with a range of driving styles and can even be used in some high-performance engines.

Mobil 1 120762 synthetic motor oil 10W-30 is an oil that is ideal for regular drivers that want an engine oil that they can count on for reliability and smooth running, while also offering long-term protection.

4. Shell Rotella (550019921) T6

As the name suggests, this oil is made with heavy-duty diesel engines in mind. Diesel engines are often used in extreme conditions and placed under a lot of stress, making it important to have an oil that can help to protect it against damage and keep it running as smoothly as possible.

While made with heavy duty industrial and commercial engines in mind, this oil is also used in the engines of some high-performance sports cars as it helps to protect the engine against the pressures placed on it at consistent high revs. It is also compatible with engines that meet low emission requirements.

If you are looking for an engine oil that can perform well and consistently under highly demanding conditions in diesel engines and high-performance sports engines, Shell Rotella T6 5W-40 heavy duty diesel engine oil could be just what you need.

5. Pennzoil (550038221) Motor Oil

An engine that is kept as clean as possible internally will run smoother and longer than one that isn’t, and Pennzoil 550038221 platinum 5W-30 full synthetic motor oil helps to do just that. This product contains cleaning agents that help reduce internal sludge, helping to make your engine as clean as it can be.

Keeping your engine clean helps to keep it running smoothly for better performance and efficiency, while also helping to protect against wear and tear long into the future. It also helps engines to start first time in cold weather conditions.

Reliability and performance are important in motor oils, while it is also important not to forget about your engine in the long term. Pennzoil 550038221 platinum 5W-30 full synthetic motor oil helps to keep your engine clean, providing a balance between performance, reliability and longevity.

If you are looking for an oil that will help to keep your engine as clean and sludge free as possible, this is could be the best synthetic oil for you.



I grew up working on my own cars and motorcycles and 15 years later I love still getting my hands dirty.