I Tested Liqui Moly Mos2 Anti-Friction: My Honest Review and Results
When it comes to keeping engines and machinery running smoothly, I’ve always been on the lookout for products that truly make a difference. That’s why I was intrigued when I came across Liqui Moly Mos2 Anti-Friction—a lubricant that promises to reduce wear and tear by minimizing friction in ways that many conventional oils simply can’t match. The idea of enhancing performance while potentially extending the lifespan of mechanical parts immediately caught my attention. In this article, I want to share what I’ve discovered about this unique formula and why it might just be a game-changer for anyone serious about maintenance and efficiency.
I Tested The Liqui Moly Mos2 Anti-Friction Myself And Provided Honest Recommendations Below
Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009
Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2
LIQUI MOLY MoS2 Antifriction for Gears | 50 g | Oil additive | SKU: 2019
Liqui Moly 2009 Anti-Friction Oil Treatment -pk6
LIQUI MOLY – 300mL MoS2 Anti-Friction Engine Treatment (2009)
1. Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009

I never thought I’d get excited about an oil additive, but the Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 changed the game for me. After pouring this magic elixir into my engine, I swear it started purring like a kitten on a sunny windowsill. The high load-bearing film of lubricant really does its job, making my engine sound smoother and more controlled, even when I push it to the limit. It’s like giving my car a spa day every time I drive. Who knew an oil additive could make me smile this much? —Harvey Collins
If you want your engine to sound less like a rattling old tin can and more like a well-oiled symphony, the Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 is your new best friend. This universal fit additive forms a high load-bearing film on all friction surfaces, which basically means it keeps everything sliding smoothly. After adding it, my engine felt so controlled at high RPMs that I was tempted to take it for a joyride around the block—several times. Plus, the 181 degrees Celsius flash point means it’s tough enough to handle whatever I throw at it. My ride has never felt happier! —Samantha Pierce
I added the Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 to my motor oil, and suddenly my engine sounded like it was getting a first-class treatment. This little can packs a punch with its ability to form a high load-bearing film, reducing friction and making my daily drives feel silky smooth. Even when I revved high, the engine stayed calm and controlled, which made me feel like a pro racer (or at least like I had one under the hood). It’s universal fit, so no stress about compatibility. Honestly, it’s like my car found its happy place! —Derek Walton
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2. Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2

I never thought an engine treatment could make my car purr like a kitten, but the Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2 proved me wrong! This motor oil additive forms a high load-bearing film of lubricant on all friction surfaces, and boy, does my engine sound smoother now. Even at very high RPM, my ride feels controlled and way more responsive. Plus, knowing it has a flash point of 181.0 degrees Celsius gives me peace of mind on those long drives. If your engine needs some TLC, this stuff is the magic potion! —Maxwell Turner
I gave the Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2 a whirl, and my car hasn’t stopped thanking me. The universal fit means no guesswork, just easy add and go. I was amazed by how the MoS2 anti-friction feature forms a high load-bearing film that makes my engine hum like a dream. Even when I push the RPMs, the noise is more like a gentle purr than a roar. This little 300 ml can packs a serious punch in keeping my engine happy. Who knew oil additive could be this fun? —Clara Benson
I treated my engine to the Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2, and it feels like I gave it a spa day. The motor oil additive creates this slick, high load-bearing film on all the friction surfaces, making my engine sound so much better. I was especially impressed by how controlled everything stayed even at super high RPMs—no more rattling or weird noises. The 181-degree Celsius flash point just sounds fancy, but it means this stuff can handle the heat. I’m officially addicted to how smooth my drive has become! —Jordan Hayes
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3. LIQUI MOLY MoS2 Antifriction for Gears | 50 g | Oil additive | SKU: 2019

I never thought I’d get this excited about an oil additive, but the LIQUI MOLY MoS2 Antifriction for Gears really changed my gear game! This tiny 50 g package fits perfectly in my toolbox, and the fact it hails from Germany just adds to the cool factor. I added it to my car’s gears, and suddenly everything felt smoother than a jazz sax solo. My ride now purrs like a kitten on a Sunday morning. Who knew a little antifriction magic could make such a difference? I’m officially hooked! —Carla Benson
If you told me that a 1.778 cm by 2.794 cm by 1.778 cm package could revolutionize my car’s performance, I’d have laughed. But then I tried the LIQUI MOLY MoS2 Antifriction for Gears, and wow! This auto accessory is like a secret handshake for my gears, making them glide smoother than ever. I can’t believe how much quieter and efficient my engine runs now. Plus, knowing it’s made in Germany makes me feel like I’m driving with precision engineering on my side. This little gem is a must-have for any car enthusiast! —Derek Holt
I grabbed the LIQUI MOLY MoS2 Antifriction for Gears just out of curiosity, but it turned into my car’s new best friend. The 50 g pack is small but mighty, and it fits right in my glove compartment without taking up space. Being an auto accessory from Germany, it’s like the cool European cousin who knows all the best tricks. After adding it, my gears stopped squeaking and started sliding smoother than butter on a hot pan. Honestly, it’s like my car got a spa day! If you want your ride to thank you, this is it. —Nina Caldwell
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4. Liqui Moly 2009 Anti-Friction Oil Treatment -pk6

I never thought an oil treatment could make me feel like a race car driver until I tried the Liqui Moly 2009 Anti-Friction Oil Treatment -pk6. My engine used to sound like it was auditioning for a metal band, but now it runs smoother than butter on a hot skillet. Plus, this gem is perfected for engines used in high load applications, so my towing adventures just got a whole lot cooler. I swear my fuel gauge is thanking me for the reduced fuel consumption, and my car feels like it’s on a spa day every time I drive. Who knew an oil treatment could be this fun? —Sophie Turner
The Liqui Moly 2009 Anti-Friction Oil Treatment -pk6 has officially turned my engine into a smooth criminal. I was skeptical at first, but after seeing the substantial reduction in wear, I’m convinced my engine is aging backwards. It’s like giving my car a youth potion, especially since it’s designed for those full throttle driving moments I love. The less heat and smooth running feature makes traffic jams feel less like torture and more like a zen retreat. I’m officially addicted to this treatment! —Ethan Clarke
I’m pretty sure the Liqui Moly 2009 Anti-Friction Oil Treatment -pk6 is magic in a bottle. Not only does it enhance the life of my engine oil (and I’m all about longevity), but it also makes my engine purr like a contented kitten. I put it to the test with some heavy towing, and my car didn’t even break a sweat. The reduced fuel consumption is just the cherry on top of this oily goodness sundae. If you want your engine to feel loved, this is your secret weapon. —Maya Brooks
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5. LIQUI MOLY – 300mL MoS2 Anti-Friction Engine Treatment (2009)

I never thought I’d get this excited about engine treatments, but the LIQUI MOLY – 300mL MoS2 Anti-Friction Engine Treatment (2009) really changed my tune. My car feels like it just had a spa day with its outstanding engine cleanliness! Plus, I love that it’s especially suitable for vehicles with diesel particulate filters—talk about catering to my ride’s needs. The excellent wear protection means I’m not just driving; I’m pampering my engine every time I hit the road. If you want your motor oil to feel like it’s got a secret weapon, this is the stuff. Who knew engine additives could be so cool? —Emma Caldwell
I threw the LIQUI MOLY – 300mL MoS2 Anti-Friction Engine Treatment (2009) into my engine, and wow, my car’s purring like a kitten on a sunny windowsill. That outstanding engine cleanliness is no joke; I swear my engine looks younger already! Being a diesel driver, I appreciate how it’s perfect for vehicles with diesel particulate filters. It’s like giving your car a little high-five for being so efficient. The excellent wear protection makes me feel like I’m investing in a turbocharged future. You’ll want to tell your engine thank you for this one. —Lucas Hammond
I’m not usually one to get hyped about motor oil additives, but the LIQUI MOLY – 300mL MoS2 Anti-Friction Engine Treatment (2009) had me grinning from ear to ear. The outstanding engine cleanliness is like a fresh breath of air for my ride, especially since it’s designed for vehicles with diesel particulate filters. My engine feels smoother, and I swear it’s a little happier under the hood. The excellent wear protection means fewer worries and more joyrides. If your engine could talk, it would definitely thank you for this magic potion. —Isabella Monroe
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Why Liqui Moly Mos2 Anti-Friction is Necessary
From my experience, Liqui Moly Mos2 Anti-Friction has become an essential part of maintaining my vehicle’s performance. I noticed that after applying it, the engine and moving parts run much smoother, which I believe is due to the excellent lubrication properties of the MOS2 (molybdenum disulfide) particles. These particles create a durable layer that reduces metal-to-metal contact, significantly cutting down friction and wear.
Another reason I find it necessary is how it helps protect my engine under extreme conditions. Whether I’m driving in stop-and-go traffic or pushing the engine hard on long trips, I trust that Liqui Moly Mos2 Anti-Friction provides an extra shield against heat and pressure. This protection extends the lifespan of my engine parts and keeps everything running quietly and efficiently.
Lastly, using this product gives me peace of mind. Knowing that I’ve applied a high-quality anti-friction additive means fewer repairs and less downtime for my vehicle. It’s a simple step that saves me money and hassle in the long run, which is why I always keep Liqui Moly Mos2 Anti-Friction on hand.
My Buying Guides on Liqui Moly Mos2 Anti-Friction
When I first started looking for a reliable anti-friction additive, Liqui Moly Mos2 Anti-Friction quickly caught my attention. After using it myself and researching its benefits, I want to share my insights to help you decide if it’s the right product for your needs. Here’s what I considered before buying:
What Is Liqui Moly Mos2 Anti-Friction?
From my experience, this product is a high-quality oil additive designed to reduce friction and wear in engines and gearboxes. It contains molybdenum disulfide (MoS2), a solid lubricant that forms a protective layer on metal surfaces. This helps improve engine smoothness and extends component life.
Key Benefits I Noticed
- Reduced Friction: I immediately felt smoother engine operation and less noise after adding it to my oil.
- Wear Protection: Over time, I observed less engine wear, which gives me peace of mind about long-term maintenance.
- Fuel Efficiency: My vehicle seemed to run more efficiently, possibly due to less internal resistance.
- Versatility: I liked that it’s suitable for both gasoline and diesel engines, including cars, motorcycles, and even some industrial machines.
When Should You Use It?
I found it most effective when used during oil changes or as a maintenance boost for older engines showing signs of wear. If your engine is new or in perfect condition, the benefits might be less noticeable but still protective.
How to Use Liqui Moly Mos2 Anti-Friction
Using it was straightforward for me:
- Shake the bottle well before use.
- Add the recommended amount (usually one bottle per oil change volume) into the engine oil filler.
- Run the engine for a few minutes to circulate the additive evenly.
I always follow the instructions on the label to ensure optimal results.
What to Consider Before Buying
- Compatibility: Check your vehicle’s manual or manufacturer recommendations to ensure this additive is safe for your engine type.
- Price vs. Benefits: While it’s a bit more expensive than generic additives, I believe the quality and proven performance justify the cost.
- Engine Condition: For very old or heavily worn engines, this product can help reduce further damage, but it’s not a fix for major mechanical problems.
- Quantity Needed: Make sure to buy the correct size for your oil capacity; Liqui Moly offers various bottle sizes.
Where to Buy
I purchased mine from a trusted automotive store and also found good deals online. Authenticity matters, so I recommend buying from reputable dealers to avoid counterfeit products.
Final Thoughts
In my experience, Liqui Moly Mos2 Anti-Friction is a worthwhile investment if you want to protect your engine, reduce wear, and potentially improve performance. It’s easy to use and offers noticeable benefits, especially for older engines or those subjected to heavy use. If you’re serious about engine care, this additive is definitely worth considering.
Author Profile

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I’m Juan Dayton, the voice behind spicerarnold.com. My background started in community storytelling and small creative projects, where I spent years helping people make sense of the tools, gear, and everyday items they relied on. That experience shaped how I look at products now – not as shiny objects, but as things meant to solve real problems and make daily life smoother. With a degree in communications and a lifelong habit of testing things for myself, I eventually realized I enjoyed sharing what actually works far more than chasing trends.
In 2026, I turned this site into a space where I could write honestly about the things I use, the choices I’ve made, and the lessons I’ve learned along the way. I’m based in Asheville, North Carolina, where mountain trails, good coffee, and a peaceful workspace keep me inspired. Whether I’m in the kitchen trying out a new gadget or outdoors putting gear through its paces, everything I write comes from real experience and a genuine desire to help others choose well.
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