10 Best 5W30 Synthetic Oils of 2021

Jerry Wilson
Written by
Last update:

If you are the kind of person who likes keeping up with the latest trends in the auto industry and is very close to your car, then you probably know exactly what synthetic oils are.

Synthetic oils are prized for their performance, but the problem is that they have a lot of technical terms and technical information associated with them that can confuse anyone who is not an expert in its field.

This is exactly why we decided to create this list of the best 5W30 synthetic oils of 2021. We researched the technical information behind the best oils to find out which ones offer the best performance when it comes to engine performance, engine protection, and better fuel consumption for your car.

So, if you want the best bang for your buck or just want to know which brand you should trust your life on, then keep reading.

NameCategoryProduct
Liqui Moly 2038 Longtime High Tech 5W-30 Synthetic Motor OilBest OverallLiqui Moly 2038 Longtime High Tech 5W-30 Synthetic Motor Oil
Pennzoil Platinum Full Synthetic Motor Oil 5W-30Budget PickPennzoil Platinum Full Synthetic Motor Oil 5W-30
MAG1 61790-pk6 Full Synthetic 5W-30 SM Motor OilUpgrade PickMAG1 61790-pk6 Full Synthetic 5W-30 SM Motor Oil

1. Liqui Moly 2038 Longtime High Tech 5W-30 Synthetic Motor Oil

Our rating: 9 / 10

Liqui Moly 2038 Longtime High Tech 5W-30 Synthetic Motor Oil

Check Price on Amazon

Pros:

  • World’s first long-life, high-tech synthetic engine oil for automobiles and motorcycles
  • Up to 25% longer engine life
  • Independent chemical analysis confirms double oil change interval
  • Contains MAXXIS, a revolutionary additive technology
  • Synthetic, fully synthetic, and semi-synthetic oils
  • Spray can application without mess
  • Protects and treats engines, transmissions, and differential units
  • Reduces fuel consumption
  • Dilution Risk: virtually none
  • Approved by Volkswagen and Mercedes Benz

Cons:

  • Handy oil change reminders are not available
  • Availability is limited outside the United States

This world’s first long-life, high-tech synthetic engine oil Longtime 5W was created in the late 1930s in Europe by Dr. Ing. Alfred P. Sloan, who, whilst working for General Motors, invented a special lubricant for aircraft engines.

Liqui Moly 2038 Longtime High Tech 5W-30 Synthetic Motor Oil is suitable for a large number of vehicles: 99% of all vehicles are classified as compatible with this oil.

2. Castrol 03087 EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil

Our rating: 9 / 10

Castrol 03087 EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil

Check Price on Amazon

Pros:

  • Reduced friction and wear
  • More stable viscosity (less likely to get hot)
  • Excellent protection for your engine

When it comes to choosing a good oil for your engine, synthetic or conventional oil is not a question of better or worse, it’s a question of how well the oil is matched to the engine. For example, conventional motor oils are ideal for vehicles that have regularly scheduled oil changes but do not put their engines under a lot of stress.

Conventional oils can take longer to get hot enough and to lubricate and cushion your engine at high temps. With synthetic oil, you get newer lubricants that offer great performance in high temperatures where conventional oil begins to vaporize.

The Castrol EDGE extended performance premium synthetic oil is the best you can get if you’re looking for peak protection for your high-performance engine. Its high levels of zinc keep it from breaking down under a lot of heat and high stress. This means that your engine will move more freely and will last longer.

3. Pennzoil Platinum Full Synthetic Motor Oil 5W-30

Our rating: 9 / 10

Pennzoil Platinum Full Synthetic Motor Oil 5W-30

Check Price on Amazon

Pros:

  • Multi-vehicle formula
  • Viscosity index of 145
  • Good value for a top-shelf lubricant

Pennzoil has been in the motor oil business for over 100 years and their Platinum full synthetic is one of the top performing motor oils on the market today. It is available in a 1 quart plastic bottle and is offered in a 24 pack at a great price.

Guaranteed to perform in most modern engines, it can lubricate a wide range of internal engine parts. This well-known brand of motor oil has more than 100 years of experience in the industry and produces high-quality engine oil.

The high performance qualities of this motor oil are due to the excellent formula of synthetic oil that it contains. This formula incorporates state-of-the-art technology to give your engine extra protection from friction and wear.

4. Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 1 QT

Our rating: 9 / 10

Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 1 QT

Check Price on Amazon

Pros:

  • Includes cleaning additives
  • Conventional 5W-30
  • Great for newer, high-revving engines or vehicles with lower-viscosity synthetic oils in them
  • Seem to clean up easier after use (no I did not test this)

Cons:

  • 1 quart per case, not individually packaged or shrink wrapped
  • Reported to leak pretty quickly when sub-cooled

This full-synthetic oil is great for a lot of engines that lay in a bunch and do not see frequent use. If you are on an old car that sits for long periods of time this will be great to use or in a high revving engine that is going to be used a lot.

5. Royal Purple 51530 API-Licensed SAE 5W-30 High Performance Synthetic Motor Oil

Our rating: 9 / 10

Royal Purple 51530 API-Licensed SAE 5W-30 High Performance Synthetic Motor Oil

Check Price on Amazon

Pros:

  • Quality oil
  • Hardly needs to be changed

Cons:

  • Perhaps expensive
  • Stains clothing

This royal purple oil is of the best that you can get in the market. If you want to make your engine last longer, this would be one of the best options.

The oil has been specifically designed to provide maximum efficiency and protection for your engine. The oil is made from synthetic base oil and ingredients. The ingredients used are superior quality. The ingredients used have been sourced from the leading suppliers in the industry.

The oil is packaged in a nice bottle with a good dispensing cap. The bottle comes with a lid that is used to cover the bottle while it is not in use. This helps to prevent the oil from spilling or evaporating.

6. Speedol Zeta 5W-30 Full Synthetic Motor Oil 5-Quarts

Our rating: 9 / 10

Speedol Zeta 5W-30 Full Synthetic Motor Oil 5-Quarts

Check Price on Amazon

Pros:

  • Very Affordable
  • Loved by Most Mechanics
  • Capacity of 5 quarts
  • High quality

Cons:

  • Not for low-temperature conditions
  • Not easy to pour

| Unique Patented Molecular Formula for Extreme Pressure and Protection | Includes ZEUS Ultra-Clean Technology for Significant Reduction of Engine Deposits | Specially Formulated for Turbocharged, Supercharged, Naturally Aspirated and Diesel Engines |.

This Fuchs Titan Neo Extreme is a semi-synthetic oil made of the highest quality base fluids and state-of-the-art additive technology. It increases the engine’s protection against wear and strengthens against corrosion for better performance. You can use it for almost all types of vehicles including industrial, agricultural, construction, diesel, and gas engines in general.

Fuchs Titan Neo Extreme oil is manufactured at the Fuchs factory in Germany where all stages of production take place under optimal conditions of quality, reliability, safety, and compliance with strict standards. You will get this oil with the latest factory setting, so there’s no need to perform additional add-on services before use.

7. Shell Rotella 550050318-6PK Gas Truck Full Synthetic 5W-30 Motor Oil

Our rating: 8 / 10

Shell Rotella 550050318-6PK Gas Truck Full Synthetic 5W-30 Motor Oil

Check Price on Amazon

Pros:

  • Affordable
  • Heavy-duty
  • Good for cool and hot environments

Cons:

  • Attracts a lot of dust
  • Not great for long-term storage

This oil is good for diesel engines as it can get hot and still have the lubrication to prevent wear during high-stress cycles. I have used this oil in my Ford No. 7 and No. 2, Caterpillar, and in my farming equipment with excellent results. It keeps my engines clean and lubricated and has been on some long hauls without any problems.

It’s synthetic and can work in both hot and cold temperatures. It also has just enough ZDDP with a lot of particulate removal. In the past, I’ve had a lot of trouble with the environment getting into the air, which can be a problem for oil.

It’s not the cheapest; but, it’s the best for all conditions, especially cold temperatures.

8. MAG1 61790-pk6 Full Synthetic 5W-30 SM Motor Oil

Our rating: 7 / 10

MAG1 61790-pk6 Full Synthetic 5W-30 SM Motor Oil

Check Price on Amazon

Pros:

  • Affordable
  • Wide range of synthetic engine oil categories
  • Superior performance

Cons:

  • Mild weight oils are thinner and are better for engines with older worn valve guides and older worn cylinder bores
  • May not be ideal for turbocharged engines

This is a PAO-based hydraulic fluid. It is designed for use in a broad range of open gears pumps, hydraulic drive engine, and electric motors. This hydraulic fluid is Synthetic Hydrocarbon based that gives excellent protection against rusting, oxidation, and corrosion. This oil does not contain any additives. This oil can be used for open gear pumps, hydraulic drives, and hydraulic motors in many industrial applications.

This oil is compatible with mineral petroleum based hydraulic fluids. This oil has a moderate viscosity improver which will give faster pump and motor operating speeds. This oil will not solidify, preventing deposits within the hydraulic system. This oil can be used with an extension tube with a set at ambient temperature of 17 degrees C (62.6 degrees F).

9. Mobil 1 94001 5W-30 Synthetic Motor Oil

Our rating: 7 / 10

Mobil 1 94001 5W-30 Synthetic Motor Oil

Check Price on Amazon

Pros:

  • Excellent value for a synthetic blend
  • Outstanding cold-weather performance
  • Protects against thermal breakdown better than most oils

Cons:

  • Expensive for an oil of its rating rating
  • Mobil 1 no longer carries a 1-year warranty

Manufactured by Mobil, a global leader in motor oil research and development for decades, the Mobil 1 94001 5W-30 Synthetic Oil is a top performer in the synthetic realm. It won’t disappoint.

It’s a top choice among many professional mechanics, which is proof in itself of its marketability. But don’t take my word for it…

This oil excels in many categories, including:

  • Expensive for an oil of its rating rating
  • Mobil 1 no longer carries a 1-year warranty

10. PurOl Elite Synthetic Motor Oil 5w30 1-liter Bottle

Our rating: 6 / 10

PurOl Elite Synthetic Motor Oil 5w30 1-liter Bottle

Check Price on Amazon

Pros:

  • Gets super clean!
  • Works great for motorcycles, and cars.
  • Pretty awesome value.
  • Does not consume contaminants from your oil.
  • Has the perfect viscosity for anything from an 8 cylinder car to a 4 cylinder motorcycle.
  • Excellent oil.

Cons:

  • May not be ideal for winter use.
  • Unlike some other oils, I’ve found that this one doesn’t accumulate the inorganic gunk you’d find in a conventional oil.
  • I’ve had this one on my bike for almost a year now and I’ve had really awesome results.

It’s one of the few oils that I’ve tested that actually had a greatly extended oil change interval. Most oils that I’ve tested seem to be close to useless after 6,000 miles, but this one managed to clear the 7,000-mile mark with no problems.

One of the major advantages of this oil is that it works well in any temperature. You can keep it in your engine in the dead of winter and it works just fine.

Frequently Asked Questions (FAQ)

What is the best 5w30 synthetic oil?

If you're a car enthusiast, or just a normal driver looking for a better oil, then you've come to the right place. We'll walk you through everything you need to know about the 5w30 synthetic oil.

What is the best 5w30 synthetic oil class?

In short, this is the best class of oil you can get for your car. It differs from the "straight" or "multi-grade" oil in that it has a thicker viscosity, but is still thinner than a "winter" or "wintec" oil. How thicker is it? Depending on which manufacturer's description you look at, the class is rated with anywhere from 5 to 12 being the thickest, and the thinner oils are usually an oil class 0.

Why is it not called a 10w30?

What brand of synthetic motor oil is best?

Most manufacturers develop their own brand, but some big names in the field include: Mobil 1, Castrol, Pennzoil, Chevron, Royal Purple, and Valvoline.

One of the problems with the oils market is that there are a lot of unbranded products floating around, and it can be hard to tell of they are quality oils or not. To make it easier for you to choose a good product, we have compiled a list of the ten best 5W30 synthetic oils of 2021 below:

  • Odyssey 5W30 Motor Oil
  • Performance 5W30 Motor Oil
  • Motul 5W30 Motor Oil
  • Mobil 1 5W30 Motor Oil
  • Gulf Ultra 5W30 Motor Oil
  • Pennzoil 10W30 Motor Oil
  • Valvoline 5W30 Motor Oil
  • Quaker State 5W30 Motor Oil
  • Royal Purple 5W30 Motor Oil

Is Mobil 1 the best synthetic oil?

Absolutely. If you want the best synthetic oil money can buy, Mobil 1 is it. It is formulated to resist viscosity loss due to high temperatures better than any other synthetic oil. What does this mean? Simply that your engine is less likely to burn oil. Using premium synthetic oils is always a smart decision in order to increase the longevity of your car and save money in the long run. No synthetic oil protects as well against viscosity loss and shear, and few oils have better film strength than Mobil 1.

Can I use 10w30 synthetic instead of 5w30?

You CAN use a 10W30 synthetic instead of 5W30, but as we’ve noted in our previous answer, going with an extra weight oil or heavier oil may end up causing more harm than good by causing thick, sludgy build up in the engine, which can severely reduce performance.

5W30 is a great synthetic, and is the most commonly used synthetic by millions of car enthusiasts. There’s really no need to go thicker than that, unless you live in an extremely cold climate where the temperature – on average – will dip below -10F on a regular basis.

If you’re interested in finding out more about the viscosity rating, this article will help.

Moreover, you may also be interested in our best synthetic oil for Ferrari post.

Conclusion

For this post, we look at 10 different 5W30 synthetic oils and then we rank them all. We determine our ranking by giving each oil a score when we consider a variety of factors. Things like how well their detergent and dispersant packages work, their viscosity-temperature performance, their performance in our extreme pressure test, their molybdenum level, and their manufacturing location. We hope that this detailed analysis is helpful to you and your engine, no matter what kind of car you have or what kind of synthetic oil you choose.

Our Recommendation

NameCategoryProduct
Liqui Moly 2038 Longtime High Tech 5W-30 Synthetic Motor OilBest OverallLiqui Moly 2038 Longtime High Tech 5W-30 Synthetic Motor Oil
Pennzoil Platinum Full Synthetic Motor Oil 5W-30Budget PickPennzoil Platinum Full Synthetic Motor Oil 5W-30
MAG1 61790-pk6 Full Synthetic 5W-30 SM Motor OilUpgrade PickMAG1 61790-pk6 Full Synthetic 5W-30 SM Motor Oil