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Ever wondered what makes the car engines running so smooth? Well, massive credit for the smoothness goes to the engine oils. Car engine oils are viscous synthetic fluids that remain in contact with your engine 24×7.

Our Top Oil For 5.7 Hemi Reviews

In the case of a 5.7 Hemi, the engine can hold around 7 quarts of engine oil. So, these are the four best oils for 5.7 Hemi available in the market.

Royal Purple 51520

The best overall oil for 5.7 Hemi on our list is the Royal Purple 51520 motor oil. A large proportion of the Hemi 5.7 engine owners can relate to its efficiency. The main principle of the Royal Purple 51520 is blending synthetic oils with base oils.

51520 has a viscosity of 5W-20 that makes it the ideal engine oil for the Hemi 5.7. It is glossier than the Pennzoil Platinum and Valvoline Advanced. However, the Pennzoil Platinum is more viscous than the Royal Purple 51520.

Besides better wear protection, it also improves the engine’s efficiency. The Royal Purple 51520 smoothens gear shifting and makes clutch plates run longer.

So, if you want to save some bucks on gas, give your Hemi 5.7 the Royal Purple 51520. As there is minimal friction between clutch plates and valves, power figures reach the optimum.

The best thing about the Royal Purple 51520 is its corrosion resistance feature. It gets evenly laid on all engine parts so that humidity can’t affect the interiors.

Many car owners like the 51520 because it can be used with other mineral oils. If you are willing to give it a test, buy in a smaller quantity and mix it with your synthetic oil. You’ll get unexpected results, as it has advanced additive technology.

Pros:

Advanced additive technology makes blending better
It gets evenly distributed, protecting from corrosion.
Has greater viscosity that reduces engine overheating

Cons:

Slightly more expensive

Liqui Molly 2259 Special Tech AA 5W020

Manufactured by the famous Liqui Molly, the AA 5W020 is fully synthetic with a viscosity of 5W-20, perfect for the 5.7 Hemi.

The AA 55020 is specially designed to maintain the efficiency of modern engines. However, it might not be suitable for older engines because of sludge deposits. In terms of engine heat reduction, it comes after the Royal Purple 51520.

Liqui Molly 2259 reduces wear and tear, and you don’t have to spend any funds on spare parts. The AA 5W020 also saves you on the pocket by improving the fuel efficiency of your Hemi 5.7.

The Liqui Molly oil has a glossy and more transparent finish than the Valvoline Advanced. As a result, the AA 5W020 retains its texture for longer than the former. Liqui Molly combines unconventional base oils with synthetic ones to produce the 5W020.

This initiative led by the company benefits the users to get a cleaner engine status. So, you won’t have to remove sludge deposits from your 5.7 Hemi more frequently. Along with the 5.7 Hemi, the AA 5W020 is also compatible with most motor engines.

However, it does not serve the 5.7 Hemi well in hotter climates, as this engine oil has a low burning point than the other engine oils on the list. In colder climates, the AA 5W020 works really well as it has a lower freezing point.

Pros:

Suitable for modern engines due to the synthetic blend.
Glossy texture keeps the engine cleaner.
Synthetic blend retains fuel efficiency.

Cons:

A high melting point degrades texture in a hotter environment

Valvoline Advanced Fully Synthetic SAE 5w-30

Another outstanding oil is the Valvoline Advanced Fully Synthetic SAE engine oil. The Valvoline Advanced is a fully synthetic engine oil with a viscosity of 5W-30.

In terms of improving fuel efficiency, the Royal Purple 51520 serves better than this one. However, the Valvoline SAE 5W-30 is far more viscous than Royal Purple.

Valvoline Advanced is a fully synthetic oil that prevents engine malfunction caused due to overheating.

All thanks to its higher viscosity that offers better lubrication than 5W-20 oils. Moreover, it saves your 5.7 Hemi even if there is less water in the radiator. Your Hemi 5.7 needs some relaxation if you run it off-road, and the Valvoline Advanced oil ensures that.

On driving in cold climates, it protects your engine with its fast flow feature. However, you might be disappointed with its packaging, as the SAE 5W-30 isn’t the best in the segment.

Moreover, the Valvoline fully synthetic engine oil loses its texture faster. It is probably because this engine oil does not have a perfect blend of synthetic and base oils. Nevertheless, it will maintain the cleanliness inside your 5.7 Hemi, as it doesn’t form sludge deposits.

Pros:

Higher viscosity offers better lubrication.
Fast flow feature secures engine in colder climates.
Affordable and easy on the pockets.

Cons:

Improper packaging, causing oil leaks.
Zero blends cause faster texture degradation.

Pennzoil Platinum Synthetic

If you want the longest-running oil for your 5.7 Hemi, get the Pennzoil Platinum Synthetic Oil. The Pennzoil Platinum is a fully synthetic engine oil with a viscosity of 5W-30 that is thicker than the AA 5W020.

It also delivers unmatched protection to your engine by preventing sludge deposits. As the Pennzoil Platinum is made from natural gas, it gets evenly attached to your 5.7 Hemi.

The texture of this engine oil has a glossy finish that lasts longer than the Royal Purple 51520. Its synthetic formation from natural gas makes it a better heat retentive over the Royal Purple.

The Pennzoil Platinum is the most expensive engine oil on the list, but it’s also worth it. Another fascinating fact about this engine oil is that it increases the power figures of your 5.7 Hemi.

With the Pennzoil Platinum inside the 5.7 Hemi, it will generate optimum power and torque. When it comes to packaging and design, you should be pretty impressed with its ergonomics.

There is a section made on the container’s side for you to hold it better and pour the oil steady. It has the best packaging of the other three oils on the list.

The Pennzoil Platinum synthetic oil improves your fuel efficiency but not to the extent of the oils mentioned above.

However, the company claims that it offers extra 500 miles than other synthetic oils. If not disposed of well, the residues of this engine oil can be harmful to the environment.

Pros:

Natural gas enables better engine performance
Natural gas additives make it the longest-running oil
More heat retention due to greater viscosity

Cons:

Lack of base oils causing low fuel-efficiency improvement
Environmentally hazardous because of harmful residues

Features To Consider When Buying Oil For 5.7 Hemi

Engine oils are hard to switch because you do not want to compromise the engine with a different oil every time. To get the correct engine oil for your 5.7 Hemi, you should consider some aspects.

Viscosity

The term “viscosity” for an engine oil defines its level of thickness and glossiness. It is also termed the viscous force you need to apply to keep the oil moving. When it comes to selecting for your 5.7 Hemi, check the viscosity.

It is a mathematical quantity labeled on the packaging of all synthetic oils. There are synthetic oils of many viscosity variants such as 10W-50, 20W-50, and many more. The recommended viscosity of synthetic oils for 5.7 Hemi is 5w-20 and 5w-30.

However, the 5w-30 variant is thicker than the 5w-20. Viscosity also determines the heat retention capacity of engine oil. In simple words, it defines how much the engine oil will thicken according to the temperature.

There is a universal term called the SAE weight, which you need to check. It shows how the engine oil is suitable in hot and cold temperatures.

The lower the viscosity, the faster will be the oil flow. In this case, 5W-20 engine oil flows better than the 5w-30 variant.

Oil Types

Engine oils come in a plethora of types ranging from mineral to fully synthetic. Each engine oil type has a different viscosity range—moreover, the recommended oil types for each engine is specific.

When choosing the oil type for your 5.7 Hemi, it is better to go for the synthetic ones. You can also use a mineral engine oil to run your 5.7 Hemi, but the oil is likely to lose its texture sooner than you expect.

Once the oil loses its texture, you need to drain it out, or it will form sludge inside your engine. Synthetic engine oils have a greater viscosity and run longer than mineral and semi-synthetic ones.

You can also go through the car manual to find the exact recommendation of the oil type. Just like the viscosity, the company mentions the kind of engine oil on its container.

API Certification

Before choosing the correct engine oil for your 5.7 Hemi, check the labels for certification on the container. You will get details on the container, such as viscosity and classification codes.

Usually, checking for a classification code is as important as checking the viscosity of the engine oil. To release an engine oil in the market, the company has to fulfill some norms of the governing body.

Checking for information such as API certification marks ensures that you have made a safe choice. Always check for the API certification mark, better known as “Stardust,” on oil labels.

There are many certifications issued by the International Lubricant Standardization and Approval Committee (ILSAC). The synthetic oil you choose for your 5.7 Hemi must have an ILSAC approval.

ACEA Standards

ACEA is the governing body under the European Automobile Manufacturers Association. Besides API certification, also inspect whether the engine oil for your 5.7 Hemi meets ACEA standards.

It is a combination of numerical and alphabetical characters (E.g., A2, B1). The alphabet specifies the type of engine based on the type of fuel it consumes.

For instance, the letter A stands for petrol engines, whereas B, C, D, and E stand for diesel, light engines, and heavy diesel engines, respectively. On the other hand, the numerical expression specifies the oil performance.

For instance, the numerical expression for petrol and diesel engines will be 3, 4, and 5 depending on the oil category. In the case of a 5.7 Hemi, the marking on the engine oil must be A3/B3.

Suitability

The suitability factor is one of the most important aspects of choosing the right engine oil for your 5.7 Hemi. Gasoline engines differ from diesel ones in terms of power figures and emissions.

For gasoline engines like the 5.7 Hemi, synthetic engine oils work best. If you own a diesel engine, you can use fully synthetic engine oils but only in some cases.

The engine displacement of 5.7 Hemi is around 345 cubic inches with approximately 5 quarts of synthetic engine oil. So, you have to choose the correct synthetic engine oil that comes in a 5 quarts container.

Additional Features

Nowadays, synthetic engine oils come with several reagents that increase the longevity of your engine.

You can go for engine oil that has anti-wear agents blended with it on a molecular level. Synthetic oils having an anti-wear agent increases the fuel efficiency to a great extent.

It is because there is less friction involved in moving the crankshaft and the clutch plates.

There also synthetic oils that have antioxidants for the 5.7 Hemi engine. Things get better if the oil has corrosion inhibitors to keep the engine safe from corrosion.

Other added features include anti-foaming agents and Octane boosters. These components eliminate small metal bits from the engine. You’ll also get the best engine oil for 5.7 Hemi specially designed to withstand excess heat or cold.

Conclusion

Produced in 2003, the 5.7 engine has undergone a lot of modification since then. After every third year, a new variant of the engine comes up with a ton of features. To keep the engine running smooth, the engine oils also must be changed at the same pace.

As modified 5.7 Hemi engines emerged, the old engines lost their suitability. On this date, you can use any one of the oils mentioned above to keep your 5.7 Hemi running.