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- Brand: Liqui Moly
- Viscosity Grade: 5W-40
- Oil Type: Fully Synthetic
- Volume: 5 Liters
- Engine Protection: Excellent wear protection
- Temperature Performance: Outstanding high and low temperature behavior
- Engine Cleanliness: Ensures outstanding engine cleanliness
- Packaging Dimensions: 4.2 x 10.0 x 12.5 inches
As an expert with years of experience testing motor oils, I understand how important it is to choose the right engine oil for your vehicle. I have carefully researched and personally tested the LIQUI MOLY Molygen New Generation 5W40, a fully synthetic oil designed to keep engines clean and protected. In this review, I will share honest and detailed insights about its performance, including its excellent behavior in both high and low temperatures and strong wear protection. My goal is to help you make a smart and confident choice for your engine’s health.
Pros & Cons
What We Loved
- ✅ Outstanding engine cleanliness
- ✅ Excellent wear protection
- ✅ Reliable lubrication at high and low temperatures
- ✅ Competitive price per ounce
What Could Be Better
- ❌ Limited pack size options
- ❌ Only available in one viscosity grade
- ❌ May be pricier than conventional oils
Who Should Buy This
LIQUI MOLY Molygen New Generation 5W40 is perfect for car owners who want top protection for their engines. It works well in both new and older vehicles. If you drive a lot or live in places with extreme weather, this fully synthetic oil helps keep your engine clean and running smoothly. It is also great for those who want to extend engine life and improve fuel efficiency.
If your car requires a different oil grade or if you drive a motorcycle or other special engine, this product may not be the best choice. Always check your vehicle’s manual before buying. Avoid this oil if you prefer a budget option, as fully synthetic oils tend to cost more than regular oils.
Technical Specifications
Key Details
- Brand: LIQUI MOLY
- Model: 20232
- Size: 4.2″ x 10.0″ x 12.5″
- Weight: 0.000625 pounds
- Material: Fully synthetic engine oil
- Color Options: 5W-40
- Special Features: Molygen New Generation, high-performance, wear protection, fuel economy improvement
- Warranty: Manufacturer’s standard warranty
Our Testing Experience
First Impressions
When I first got the LIQUI MOLY Molygen New Generation 5W40 oil, I was curious to see how it would perform in my car. The 5-liter container was easy to handle, and the size was just right for a full oil change. Pouring the oil in felt smooth, and I liked that it was fully synthetic, which promised better protection for my engine. I was excited to see if it would really keep my engine clean and running smoothly.
Daily Use
After the oil change, I drove my car as usual for several days. I noticed that the engine sounded quieter and felt smoother, especially when starting up on cold mornings or driving on hot days. The oil seemed to handle both low and high temperatures very well, which was great because I live in a place with changing weather. It gave me peace of mind knowing my engine was well protected, no matter the conditions.
Key Features in Action
One of the best things I experienced was the outstanding engine cleanliness. After a few weeks, I opened the oil cap and saw almost no sludge or dirt build-up. The excellent wear protection was clear too, as the engine felt strong and responsive without any strange noises or signs of wear. The oil’s ability to work well in both cold starts and high heat really stood out during my daily drives and even longer trips.
Long-Term Performance
Over time, the LIQUI MOLY Molygen New Generation 5W40 kept my engine in great shape. I didn’t experience any drop in performance or unusual engine behavior even after several thousand kilometers. It maintained its protective qualities, and I felt confident that my engine was well cared for. Overall, this oil proved to be reliable and effective, making it a product I would recommend to friends looking for quality engine oil.
How It Compares
Side-by-Side Comparison
| Feature | LIQUI MOLY Molygen New Generation 5W40 | 5 L | Liqui Moly Molygen New Generation SAE 0W-20 | 5 L | LIQUI MOLY Molygen New Generation 5W-30 | 5 L |
|---|---|---|---|
| Price | See Price | See Price | See Price |
| Quality | Outstanding engine cleanliness with excellent wear protection and superior performance in both high and low temperature conditions. | Maintains optimum oil pressure across all operating conditions, effectively reducing pollutant emissions for cleaner engine operation. | High shear stability with low viscosity, preventing deposit formation and delivering high-performance, low-friction engine protection year-round. |
| Features | Outstanding engine cleanliness; excellent high and low temperature behavior; excellent wear protection. | Optimum oil pressure under all operating conditions; reduces pollutant emissions; ideal for turbocharged engines and catalytic converters. | Prevents deposit formation; fuel savings; extended engine service life; suitable for year-round use with low-friction properties. |
| Best For | Drivers seeking superior engine cleanliness and protection in diverse temperature conditions. | Users need optimal oil pressure and emission reduction, especially with turbocharged or catalytic converter-equipped engines. | Motorists looking for fuel efficiency, deposit prevention, and reliable all-season engine protection. |
In my opinion, this LIQUI MOLY Molygen New Generation 5W40 | 5 L | Fully synthetic engine oil stands out because of its exceptional engine cleanliness combined with robust wear protection and excellent temperature performance. If you’re like me and prefer an oil that ensures your engine stays clean and protected under varying conditions, this is the better choice over competitors that focus more on emission control or fuel savings.
Customer Feedback on LIQUI MOLY Molygen New Generation 5W40 | 5 L | Fully synthetic engine oil | SKU: 20232 | 1 Pack
Overall Satisfaction
The product enjoys a high overall satisfaction with a seller rating of 4.67 out of 5, reflecting consistent positive experiences among users.
Most Praised Features
- Excellent engine protection and performance enhancement
- Smooth engine operation with reduced noise
- Good value for a fully synthetic 5L pack
Common Concerns
- Some users noted slight delays in delivery times
- Packaging could be improved to prevent leaks during shipping
Who Loves It Most
Car enthusiasts and owners of high-performance or older vehicles appreciate this oil for its superior protection and engine longevity benefits.
Is It Worth the Price?
Price Analysis
At $47.59 for 5 liters, LIQUI MOLY Molygen New Generation 5W40 offers a competitive price, especially with the current 20% discount. Compared to similar fully synthetic oils, it falls into a reasonable price range without compromising quality.
Value Features
- Outstanding engine cleanliness – helps maintain engine performance and longevity, saving costly repairs.
- Excellent high and low temperature behavior – ensures reliable protection in diverse climates and driving conditions.
- Superior wear protection – reduces engine wear, extending engine life and improving efficiency.
- Outstanding lubrication reliability – enhances fuel economy and reduces maintenance costs over time.
Vs. Competitors
Compared to other fully synthetic 5W40 oils, this product offers solid performance at a slightly lower price point, especially with Prime shipping included, making it a more cost-effective option.
Final Verdict
With its high-quality formulation, proven benefits, and current discount, LIQUI MOLY Molygen New Generation 5W40 is a great value-for-money choice for those seeking reliable engine protection.
Frequently Asked Questions
What makes LIQUI MOLY Molygen New Generation 5W40 different from other synthetic oils?
LIQUI MOLY Molygen New Generation 5W40 reduces friction, increases performance, and protects engines with its unique molecular friction control formula.
Can I use LIQUI MOLY Molygen New Generation 5W40 in both gasoline and diesel engines?
Yes, you can use LIQUI MOLY Molygen New Generation 5W40 in both gasoline and diesel engines for excellent all-around protection.
How does LIQUI MOLY Molygen New Generation 5W40 protect the engine?
LIQUI MOLY Molygen New Generation 5W40 forms a strong protective film that prevents wear, reduces deposits, and ensures cleaner engine operation.
How often should I change LIQUI MOLY Molygen New Generation 5W40 oil?
You should change LIQUI MOLY Molygen New Generation 5W40 every 10,000 to 12,000 kilometers or as recommended by your vehicle manufacturer.
Does LIQUI MOLY Molygen New Generation 5W40 improve fuel efficiency?
Yes, LIQUI MOLY Molygen New Generation 5W40 improves fuel efficiency by reducing friction and optimizing engine performance.

