Best 5W 20 Full Synthetic Oil in 2023 (Review)

Sometimes it might be quite difficult to find the best 5w 20 full synthetic oil. With every niche market offering so many different products, it makes sense that this is the case.

Unfortunately, this very fact can make it incredibly difficult to find the item that best suits your needs, which is why we’ve put together this 5w 20 full synthetic oil buying guide.

Our Best Picks:

#	Preview	Product
1		Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart	Check Price
2		Mobil Full Synthetic Motor Oil 5W-20, 5 Quart	Check Price
3		Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quart Jug	Check Price
4		Valvoline Advanced Full Synthetic SAE 5W-20 Motor Oil 5 QT (Packaging May Vary)	Check Price
5		Pennzoil Ultra Platinum Full Synthetic 5W-20 Motor Oil (5 Quart, Single Pack)	Check Price
6		Amazon Basics Full Synthetic Motor Oil, SN Plus, 5W-20, 5 Quart	Check Price
7		Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-20, 5 Quart	Check Price
8		K&N Motor Oil: 5W-20 Full Synthetic Engine Oil: Premium Protection, High Mileage, 4 Quarts	Check Price
9		Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray	Check Price
10		Valvoline Extended Protection Full Synthetic Motor Oil SAE 5W-20 5 QT	Check Price

Best 5W 20 Full Synthetic Oil Reviews:

Bestseller No. 1

Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart

• Mobil 1 advanced full synthetic motor oil 5W-20 helps to protect your engine from the five factors that can damage engines over time
• Helps to protect critical engine parts for up to 10,000 miles between oil changes*, controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
• Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
• Helps extend engine life by working to prevent damaging deposits and sludge buildup
• Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)

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Bestseller No. 2

Mobil Full Synthetic Motor Oil 5W-20, 5 Quart

• Mobil Full Synthetic 5W-20 motor oil is formulated for vehicles upgrading from conventional oil or synthetic blend, or requiring full synthetic motor oil
• Provides guaranteed protection that's 1.5X longer than our conventional and synthetic blend oils, up to 7,500 miles between oil changes*
• Helps to prevent sludge and deposit formation, to help reduce engine wear, and has balanced additive system formulation
• Provides excellent resistance to oil breakdown, for proven long-lasting protection, and maintains oil viscosity at high operating temperatures
• Recommended for all types of gasoline-powered vehicles, including those with turbocharged engines, and meets API SP resource-conserving

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Bestseller No. 3

Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quart Jug

• Castrol GTX Full Synthetic Motor Oil provides maximum protection to help fight the impact of severe conditions that can potentially shorten engine life
• Castrol GTX Full Synthetic has been proven to dramatically reduce engine wear - 6X better than the industry standard
• 1.3X better sludge protection than industry standards
• Full synthetic formula provides thermal and oxidation stability with a superior level of protection against viscosity breakdown
• Specifications: API SP/SN PLUS/SN, ILSAC GF-6, Meets Ford WSS-M2C947-B1

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SaleBestseller No. 4

Valvoline Advanced Full Synthetic SAE 5W-20 Motor Oil 5 QT (Packaging May Vary)

• 40% More Protection Than Industry Standards With Enhanced Anti-Wear Additives That Build A Bonus Layer Of Defense Between Critical Moving Parts Within Your Engine
• Resist Oil Breakdown 10X Better Than Industry Standards With A Combination Of Premium Antioxidants That Fight Oil Breakdown And Degradation
• 25% Better Protection Against Deposits With Extra Engine-Cleaning Detergents
• Exceptional Temperature Protection And Viscosity Retention Ensure A High Level Of Defense Even In The Most Challenging Climates

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SaleBestseller No. 5

Pennzoil Ultra Platinum Full Synthetic 5W-20 Motor Oil (5 Quart, Single Pack)

• Full synthetic 5W-20 engine oil made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology
• No other leading motor oil provides better wear protection for your engine (Based on Sequence IVA wear test using SAE 5W-30)
• Helps protect engines from loss of power and provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine)
• Keeps pistons dramatically cleaner than required by the toughest industry standards (Based on ILSAC GF-6 and Sequence IIIH piston deposit test using SAE 5W-30)
• Delivers unsurpassed sludge protection to help keep high-performance and luxury car engines as close as possible to factory clean (Based on Sequence VH Sludge Test using SAE 5W-20)

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Bestseller No. 6

Amazon Basics Full Synthetic Motor Oil, SN Plus, 5W-20, 5 Quart

• For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
• Formulated for longer drain intervals
• Helps prevent build up that can cause rust and corrosion
• Reduces friction for less engine wear
• High resistance to viscosity and thermal breakdown

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Bestseller No. 7

Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-20, 5 Quart

• Mobil 1 Extended Performance full-synthetic motor oil 5W-20 helps protect critical engine parts for up to 20,000 miles between oil changes,* controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
• Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
• Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
• Helps extend engine life by working to prevent damaging deposits and sludge buildup
• Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)

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Bestseller No. 8

K&N Motor Oil: 5W-20 Full Synthetic Engine Oil: Premium Protection, High Mileage, 4 Quarts

• PREMIUM FULL SYNTHETIC: K&N premium synthetic oil helps keep your engine running like new.
• ADVANCED SYNTHAMAX TECHNOLOGY: Formulated with unique additives to help protect critical engine components.
• SUPERIOR ENGINE PROTECTION: Advanced formula full synthetic oil is formulated to minimize harmful contaminants and sludge buildup.
• REDUCE WEAR & TEAR: K&N ultra synthetic engine oil offers premium engine protection.
• ALL WEATHER PROTECTION: K&N advanced full synthetic motor oil helps your car run smooth in both cold & hot temperature conditions.

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Bestseller No. 9

Mobil 1-123840 Extended Performance High Mileage 5W-20; 5QT, Gray

• Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-20 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes.*
• Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
• Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
• Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)
• Helps extend engine life by working to prevent damaging deposits and sludge buildup

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Bestseller No. 10

Valvoline Extended Protection Full Synthetic Motor Oil SAE 5W-20 5 QT

• 10X STRONGER THERMAL RESISTANCE than industry standards prevents oil breakdown in harsh conditions
• FIGHT DEPOSITS & SLUDGE with Dual Defense Additive Technology to clean while providing the ultimate defense against wear, so you can experience the most your engine has to offer
• 50% BETTER WEAR PROTECTION than industry standards with anti-wear additives that prvent metal-on-metal contact, protecting your engine’s most vulnerable components and maximizing engine life
• BUILT FOR MODERN ENGINES with a formula optimized to outlast the extreme conditions of today’s vehicles and offer max defense under the hood, even with the newest technologies
• MAXIMIZE EFFICIENCY & FUEL ECONOMY with friction modifiers that stop moving parts from touching, minimizing energy loss and keeping friction at a minimum so you get the best power and efficiency out of your engine

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Last update on 2023-02-06 / Affiliate links / Images from Amazon Product Advertising API

How to find the best 5w 20 full synthetic oil?

Here, we’ll be going over a number of factors that you can use to ensure that you’re purchasing the best 5w 20 full synthetic oil for you.

Regardless of which type of item you’re looking to buy, chances are that there are existing buying guides on the internet, all of which aim to give you good 5w 20 full synthetic oil recommendations.

Despite these recommendations, however, it’s always a good idea to do your own research. In addition to this research, asking yourself the following questions is also super helpful:

• What features does the 5w 20 full synthetic oil need to have to be perfect for my needs?
• What is my budget?
• Do I need to purchase a certain brand?

Once you’ve answered these questions and have a good idea of what you’re looking for and the buying process becomes much easier. Keep in mind that when looking for the best product, there’s no need to rush. In fact, very rarely are the ideal products found by choosing the first one you see or by basing your decisions on only one factor. Take your time and enjoy the process!

Now, with the answers to the previous questions in mind, we urge you to use our upcoming buying guide for 5w 20 full synthetic oil to find what you’re looking for:

Brand

In some cases, the brand of 5w 20 full synthetic oil is very important. For example, if you’re looking for an item that works in tandem with another, you might very well need both products to be the same brand. If this is the case, it’s vital to pay attention to this factor, as choosing the wrong product can mean the difference between wasting your money and buying a great product that functions as it should.

Features

The features in any given 5w 20 full synthetic oil are important because they can dictate which version of an item you need and how much money you need to spend. Consider all the key features that you want your item to have and don’t settle for anything that doesn’t check at least ¾ of your boxes.

Reviews

Customer reviews about 5w 20 full synthetic oil are crucial – especially when you’re buying a product that costs a lot of money or serves a big importance. Luckily, most products can be found online, which means that it’s common for there to be scores of customer reviews from those who have already purchased any given product.

Pay attention to these reviews. Take note of the pros and cons that they mention, and factor these into your big decision. In some cases, you’ll be forced to sacrifice one con in order to gain a particular pro, but being aware of the potential con is going to be beneficial in either case.

Quality

Of course, quality is key. You don’t want to purchase a low-quality product. If you do, you run the risk of your item breaking, not working properly, or otherwise proving to be very disappointing, as well as a waste of money.

You can compare 5w 20 full synthetic oil quality by researching what your potential purchases are made from, contrasting the individual items against each other to discern which one is made of the best materials.

Warranty

Warranty isn’t always going to be important, but it definitely can be. This is especially true if the item in question is tech-related or expensive. A good warranty will be valid for an extended time after purchase and cover a variety of problems ranging from item defects to random accidents, water damage, and other miscellaneous events that could ruin your product.

Conclusion

The quest to find the best 5w 20 full synthetic oil can be daunting – but it doesn’t have to be. It can be made much easier by asking yourself a few simple questions and then thinking critically about the items you want to buy. Consider their features, quality, brand, warranty, and customer reviews and you’re more likely to make a great purchase.