Liqui Moly vs Royal Purple: Most Authentic Comparison

There are several lubricant brands exist in the market. But the debate of Liqui Moly vs Royal Purple come forward as both are the leading company of the market.

Motor oils are extremely important for our cars. The engine of a car is in constant friction, and without any proper lubricant, the engine wears out and the temperature rises, thus reducing the performance of your vehicle.

Wait…why are we doing so much work just to select an engine oil when we can simply any engine oil we like? There are several reasons for that.

Specific engine oils are fine tuned for specific vehicles and brands. They differ based on the model of your car, its age, and engine types. Based on where you live, you need to choose your engine oils accordingly.

For example, if you live somewhere where the winter gets really cold, then you need to buy engine oils that will maintain the same lubrication and ensure that your car starts properly in extreme conditions.

Also you can read our related article on: Motul vs Liqui Moly: Which One is the Best?

Plus, you need to look for the viscosity grade, so that you get the right lubrication based on the climate and driving conditions.

We are trying to give you a hint thorough this article so that you can take a wise decision in case of selecting the proper engine oil for your dream vehicle without any hesitation. But, entirely the choice is yours.

Royal Purple vs Liqui Moly: Quick Overview

Royal Purple 51530 API-Licensed SAE 5W-30 High Performance Synthetic Motor Oil - 5 qt, Model:ROY51530
  • Better Wear Protection
  • Increased Fuel Efficiency. Royal Purple Motor Oil Is Both Fluid...
  • Better Protection Of The Expensive Catalytic Emission System
  • Improved Compatibility With Fuels Containing Ethanol
Liqui Moly 2039 Longtime High Tech 5W-30 Synthetic Motor Oil - 5 Liter
  • Low SAPS fully synthetic motor oil for diesel engines.
  • Specifically developed for engines equipped with diesel...
  • Use with extended oil change intervals as per manufacturer.
  • Package Dimensions: 9.652 L x 31.75 H x 24.638 W (centimeters)

Last update on 2023-09-22 / Affiliate links / Images from Amazon Product Advertising API

Liqui Moly vs Royal Purple: Which One Is Perfect for Your Engine?

You need to choose between the types of engine oil you are going to buy - mineral and synthetic. Mineral oils are cheaper and provide great lubrication, but creates sludge in your engine.

Meanwhile, synthetic oils protect your engine perfectly, but the cost is higher compared to mineral oils.

Short Overview

Royal Purple is an American engine oil brand that has been gaining a lot of fame and is considered as a good alternative lubricant brand.

Royal purple gives better wear protection than any other conventional or even synthetic lubricants. With more excellent corrosion prevention, it aids in improving the engine’s horsepower and torque.

Royal Purple (06530-6PK API-Licensed Heavy Duty SAE 5W-30 High Performance Synthetic Motor Oil - 1 Quart, (Case of 6)
  • Better Wear Protection
  • Increased Fuel Efficiency
  • Better Protection of the Expensive Catalytic Emission System
  • Improved Compatibility with Fuels Containing Ethanol

Last update on 2023-09-22 / Affiliate links / Images from Amazon Product Advertising API

One of the Research conducted by the North Carolina University reveal that by using Royal Purple synthetic oil, the fuel economy of the vehicles increased nearly 4.5 %.

On the other hand, Liqui Moly is a German company specialized in oils, lubricants, and additives. The company offers the most suitable motor oil with various viscosity grade for every vehicle.

According to Liqui Moly oil review, Liqui Moly 5w40 oils offer high performance, low friction, year-round use.

Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil - 5 Liter
  • Rapid oil delivery at low temperatures, high lubrication...
  • Long engine service life due to high level of protection against...
  • Outstanding engine cleanliness, tested with catalytic converters...
  • Saves fuel and reduces pollutant emission; Optimum oil pressure...
  • Approvals from vehicle manufacturers for Leichtlauf High Tech...

Last update on 2023-09-22 / Affiliate links / Images from Amazon Product Advertising API

Besides, the cold start behavior of oil is better with improved wear protection characteristics.


Liqui Moly improves oil delivery in low temperatures and improves lubrication reliability. Meanwhile, Royal Purple focuses on restoring lost engine performance.

Liqui Moly keeps the engine clean, and Royal Purple will protect your engine from low-speed pre-ignition (LSPI).


Royal Purple engine oil is made out of a blend of synthetic oils and their proprietary synthetic Synerlec additive technology that consists of Zinc and Phosphorus.

Meanwhile, the prime component of Liqui Moly is ester.


Liqui Moly engine oils have certifications for several automobile brands like BMW LL- 01, making it a great engine oil when the car is in warranty.

Royal Purple does not have any such certification. Thus, this can be an alternative engine oil after the warranty period of your car is over.


Royal Purple engine oils are mainly tuned for American vehicles. Plus, you may need to use an adapter or converter when using electrical plugs if you have a European car.

The additives present in Royal Purple engine oil improve the compatibility with fuels that contain ethanol.

Meanwhile, Liqui Moly engine oils are compatible with American and European vehicles that run on gasoline and diesel.

Oil Change Intervals

You need to change Royal Purple engine oil after 12,000 miles. In comparison, you can change Liqui Moly engine oil after every 25,000 miles.


Liqui Moly Leichtlauf engine oil costs $55.61 for a 5-liter jug. Royal Purple engine oil costs $36.99 for a single jug of 5 quarts.

Liqui Moly Pros & Cons


  • Provides better engine protection.
  • Reduces any hassles for the engine. This improves the cold start behavior.
  • This oil is eco-friendly.
  • Compatible with diesel gasoline engines.
  • Less Noise.


  • Lack of variety.
  • The oil is sticky.

Royal Purple Pros & Cons


  • Provides great fuel economy & better lubrication.
  • Works great with old and vintage vehicles
  • Improved horsepower for better engine performance.
  • Compatible with ethanol-blend gasoline automobiles.
  • Perfect choice for extreme weather conditions.


  • Higher Price.
  • Packaging quality is not so good.
  • Not properly suitable for the diesel engines.

Customer Review

According to the review of one of the valued consumer, “Moving to Liqui Moly oils, it offers optimum lubrication, outstanding engine cleanliness, and excellent friction.”

According to the statistics of Liqui Moly oil reviews on Amazon, over 90% of the customers have given 5-star ratings and are more satisfied with this oil. There aren’t any major complaints noticed regarding this product other than the high price.

‘I have been using Royal Purple for years, never faced any problems with it, recently discovered that the Royal Purple oil filter is great too”

“I put Royal Purple in my 2010 Dodge Challenger and 2003 Mach, their synthetic oil is a brilliant choice”

“Huge Royal Purple fan here, been using it for ages, I put it in all of my sports cars, with no issues so far”

Customers of Royal Purple has mixed opinions about the product. Some buy the product because of its effectiveness, ability to improve engine performance, but others think it is just a costly motor oil with just a purple dye.

Bottom Line (Author’s Recommendation)

Both Liqui Moly and Royal Purple engine oils have their own share of unique benefits. However, Liqui Moly engine oil is compatible with more vehicles, certified by BMW LL- 01, and has greater oil change intervals.

Meanwhile, Royal Purple is a cheaper alternative. However, it is extremely popular among automobile users and has a lot of positive reviews.

If your car is under warranty, stick to Liqui Moly as it is approved by your manufacturer. After that, you can switch to Royal Purple if you want, as it is a bit friendlier to your wallet.

Recommended Reading:

Is Liqui Moly Fully Synthetic?

Liqui Moly engine oils have viscosity ratings 5W-30 and 5W-40. Plus, this engine oil operates ideally between -20 and 140 degrees Celsius.

Liqui Moly can enhance old engines and reduce sludge buildup. Other than that, all the products of Liqui Moly are marked as fully synthetic.

Hence, Liqui Moly is a fully synthetic engine oil.

Some Frequently Asked Questions

Q. Is Liqui Moly oil better?

A. Liqui Moly engine oil provides better protection for the engine and reduces hassle drastically compared to Royal Purple engine oils. Plus, Liqui Moly engine oil is compatible with gasoline and diesel vehicles and reduces engine noise.

Q. Is Liqui Moly Audi approved?

A. Yes, Liqui Moly engine oil has the stamp of approval from Audi.

Q. Why Is Royal Purple So Expensive?

A. Royal Purple is a premium-quality product. It has 400% stronger film strength than any other leading motor oils. It reduces both wear and heat to protect the engine. Hence, it is nothing but the price of quality.

Q. Is royal purple the best synthetic oil? 

A. Yes, of course. With a maximum of 25,000 miles lasting on the first installation of this engine oil & provide better fuel economy, it is undoubtedly one of the best engine oils you can get for your vehicle.


Any synthetic oil with correct viscosity will give your engine the required protection if you choose wisely. Using the proper engine oil change interval makes your engine long-running.

The great advantage of Royal Purple is its fuel economy improvement and recycling process. It has the potential to survive extreme weather. Even though the product’s cost than Liqui Moly may be a distraction for you.

Besides, Royal Purple has essential additives that help in protecting and improving the performance of American vehicles. Plus, it is a cheaper alternative to Liqui Moly

Liqui Moly provide the better protection to your engine and the electrical accessories as well as also reduces movement hassle. This Motor oil is compatible with a more significant number of vehicles, and reduces engine noise effectively.

However, we will recommend you stick to Liqui Moly when your car is under warranty. After that you can switch to Royal Purple for better performance. But, entirely the choice is yours.

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