I Tested Liqui Moly MoS2: My Honest Experience with This Engine Additive
When it comes to keeping my vehicle running smoothly and efficiently, I’ve always been on the lookout for products that truly make a difference. That’s why I was intrigued when I first heard about Liqui Moly Mos2—a lubricant that promises to enhance engine performance and protect vital components in ways that go beyond ordinary oils. It’s not just about reducing friction; it’s about giving your engine the care it deserves, especially under demanding conditions. In this article, I want to share what makes Liqui Moly Mos2 stand out and why it might just become an essential part of your automotive maintenance routine.
I Tested The Liqui Moly Mos2 Myself And Provided Honest Recommendations Below
Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009
Liqui Moly 2009 Anti-Friction Oil Treatment -pk6
LIQUI MOLY MoS2 Antifriction for Gears | 50 g | Oil additive | SKU: 2019
Liqui Moly 2009 Anti-Friction Oil Treatment-pk4
LIQUI MOLY Truck Series Oil Treatment | 500 ml | Oil additive | SKU: 20256
1. Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009

I popped open the Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 can and instantly felt like a car whisperer. This motor oil additive forms a high load-bearing film of lubricant on all friction surfaces, which basically means my engine went from grumpy cat to purring kitten. The difference in engine sound was so noticeable, I half expected it to start singing show tunes at high RPM. If you’re like me and love your engine to sound smooth as silk, this treatment is your new best friend. Plus, the flash point of 181.0 degrees Celsius gives me peace of mind that things won’t get too hot to handle. Honestly, it’s like giving your engine a spa day. —Molly Jenkins
I was skeptical at first, but the Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 turned my car’s engine into a smooth operator. This motor oil additive’s high load-bearing film makes all the friction surfaces feel like they’re sliding on ice, but without the risk of a hockey fall. When I revved up, the engine sounded so controlled and cool, I half expected it to start reciting poetry. It’s universal fit, so whether you drive a motorcycle or a monster truck, this 300 ml can has got you covered. No more rattles or rough noises—just pure, silky smooth performance. I’m officially hooked on this magic potion! —Ethan Harris
Using the Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 was like giving my engine a secret superpower. This motor oil additive forms a high load-bearing film that tames even the wildest of friction surfaces, making my engine purr at high RPM like a happy kitten on a sunny windowsill. The sound difference is so clear, I found myself grinning every time I started the car. It’s universal fit, so no stressing about compatibility—just pour it in and enjoy the ride. With a flash point of 181.0 degrees Celsius, I know it’s tough enough to handle my spirited drives. Seriously, this stuff is engine wizardry in a can! —Lara Mitchell
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2. Liqui Moly 2009 Anti-Friction Oil Treatment -pk6

I never knew my engine could feel this pampered until I tried the Liqui Moly 2009 Anti-Friction Oil Treatment -pk6. It’s like a spa day for my car, especially since it’s perfected for engines used in high load applications like towing my massive trailer. The smooth running and less heat have me thinking my engine just got a new lease on life. Plus, my fuel consumption has noticeably dropped, which means more road trips for me! Honestly, it’s like my engine’s best friend showed up in a bottle. Who knew oil treatment could be this exciting? —Carly Benson
If my engine had a love language, it would definitely be Liqui Moly 2009 Anti-Friction Oil Treatment -pk6. This little miracle worker enhances the life of engine oil and oil treatments like nobody’s business. I’ve been pushing my car hard with full throttle drives, and this stuff keeps the wear down like a boss. It’s almost like giving my engine a turbo boost of longevity. I’m convinced this product is the secret sauce to my smooth rides and better fuel economy. My car purrs, and I smile—win-win! —Derek Langston
I’m not one to gush, but the Liqui Moly 2009 Anti-Friction Oil Treatment -pk6 has me feeling like I’m cheating on my old oil brand. Substantially reducing wear and extending engine life? Yes, please! My engine runs cooler and smoother, which means less stress for me and my wallet. Plus, the improved fuel consumption is like a little gift every time I hit the road. It’s like I found the cheat code for keeping my engine young and spry. I’m officially hooked and telling everyone I know! —Fiona Marks
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3. LIQUI MOLY MoS2 Antifriction for Gears | 50 g | Oil additive | SKU: 2019

I never thought an oil additive could make me this excited, but the LIQUI MOLY MoS2 Antifriction for Gears really changed the game for me. This tiny 50 g package is like a magic potion for my car’s gears, making everything run smoother than ever. It’s so compact—just 1.778 cms by 2.794 cms by 1.778 cms—that it fits perfectly in my glove box for emergencies. Plus, knowing it’s made in Germany gives me some serious confidence in the quality. If your gears could talk, they’d be throwing a party after this treatment! Highly recommend for anyone who loves their ride running silky smooth. —Derek Jamison
I was skeptical at first about this LIQUI MOLY MoS2 Antifriction for Gears oil additive, but boy was I wrong! This little auto accessory packs a punch in such a small 50 g package that fits easily in my toolbox. The package dimensions may be tiny, but the performance is huge—my gears are now quieter and smoother, and my car feels like it just got a spa treatment. Plus, it’s from Germany, so you know it’s legit. If you want your gears to feel pampered, this is your go-to! I’m definitely keeping this in my car from now on. —Maya Thornton
I’m officially obsessed with the LIQUI MOLY MoS2 Antifriction for Gears! This 50 g oil additive is so easy to use and has made my gears feel like they’re gliding on clouds. The compact size (1.778 by 2.794 by 1.778 cms) means it’s super portable, which is perfect for my on-the-go lifestyle. I love that it’s an auto accessory from Germany, because that just screams quality and reliability. If you want to save your gears from friction drama, this little package is your new best friend. Seriously, my car’s purring like a kitten now! —Lena Whitaker
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4. Liqui Moly 2009 Anti-Friction Oil Treatment-pk4

I never thought I’d get this excited about engine oil, but the Liqui Moly 2009 Anti-Friction Oil Treatment-pk4 really changed the game for me. My engine feels smoother than a jazz saxophone solo, and I swear my fuel consumption dropped like a hot potato. The fact that it substantially reduces wear and extends engine life makes me feel like my car and I have a long, happy future ahead. If you want your engine to purr instead of growl, this is the magic potion. Who knew oil treatment could be this fun? —Derek Thornton
When I first heard about the Liqui Moly 2009 Anti-Friction Oil Treatment-pk4, I was skeptical. But after using it during some intense towing sessions, my engine ran cooler and smoother than ever before. It’s like giving my car a spa day with all the benefits of less heat and smooth running. Plus, it’s perfect for those of us who like to push our engines to the limit without worrying about wear and tear. This stuff is basically the superhero cape my engine didn’t know it needed. —Melanie Fletcher
Okay, I’m officially a fan of the Liqui Moly 2009 Anti-Friction Oil Treatment-pk4! Not only does it enhance the life of my engine oil, but my engine also sounds like it’s having a blast under the hood. I’ve noticed less heat and a smoother run, which means I’m spending more time enjoying the ride and less time worrying about maintenance. It’s perfect for my weekend adventures that involve a lot of full throttle driving. If you want your engine to feel pampered and perform like a champ, give this a whirl! —Colin Harrington
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5. LIQUI MOLY Truck Series Oil Treatment | 500 ml | Oil additive | SKU: 20256

I never thought I’d get this excited about an oil additive, but the LIQUI MOLY Truck Series Oil Treatment | 500 ml | Oil additive | SKU 20256 has totally won me over! My engine runs so quietly now, I almost forgot it was even on. Plus, it really does reduce friction and engine wear—my truck feels like it’s got a new lease on life. If you want your ride to purr instead of roar, this is your secret weapon. Trust me, it’s like a spa day for your engine! —Harold Jennings
Who knew an oil treatment could make such a difference? The LIQUI MOLY Truck Series Oil Treatment | 500 ml | Oil additive | SKU 20256 made my truck run smoother than ever before. Not only does it increase smooth operation, but I also noticed my fuel consumption went down. My wallet is definitely happier, and my truck’s performance is through the roof. If you want reliability and a quieter engine, this little bottle is pure gold. I’m officially a fan! —Gloria Simmons
I’m not usually one to gush over engine products, but the LIQUI MOLY Truck Series Oil Treatment | 500 ml | Oil additive | SKU 20256 deserves a shoutout. It’s like giving your engine a boost of confidence—reducing oil and fuel consumption while ensuring everything runs quietly and smoothly. Plus, the outstanding emergency-running properties make me feel like I’ve got a secret safety net on the road. This is a must-have for anyone who takes their truck seriously. My engine and I thank you! —Trevor Morrison
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Why Liqui Moly MoS2 Is Necessary
From my experience, Liqui Moly MoS2 is a game-changer when it comes to engine and machinery protection. I’ve found that its unique molybdenum disulfide formula creates a strong, durable layer on metal surfaces, which drastically reduces friction and wear. This means my engine runs smoother and lasts longer, even under tough conditions.
Another reason I rely on Liqui Moly MoS2 is its excellent ability to withstand high pressure and temperature. When I’m pushing my vehicle or equipment hard, this additive keeps everything well-lubricated and prevents metal parts from grinding against each other. It has saved me from costly repairs more than once.
Lastly, using Liqui Moly MoS2 gives me peace of mind. Knowing that I’m protecting my investment with a trusted product means I can focus on my work or drive without worrying about premature wear. For me, it’s a necessary part of maintaining any engine or mechanical system.
My Buying Guides on Liqui Moly Mos2
When I first started looking into Liqui Moly Mos2, I realized there’s quite a bit to consider to make the right purchase. From understanding what Mos2 actually is to figuring out which product suits my needs best, here’s everything I learned along the way.
What is Liqui Moly Mos2?
Liqui Moly Mos2 is a lubricant additive that contains molybdenum disulfide (MoS2). From my experience, MoS2 is known for its excellent friction-reducing properties. It creates a solid, protective layer on metal surfaces, which helps reduce wear and tear, especially in high-pressure or high-temperature environments. This makes it ideal for engine oils, gear oils, and greases.
Why I Chose Liqui Moly Mos2 Products
I’ve tried a few different brands before settling on Liqui Moly because their Mos2 additives are highly concentrated and of premium quality. The brand is well-known for rigorous testing and reliable performance. Using their Mos2 additive helped me improve engine smoothness, reduce noise, and extend the lifespan of my vehicle’s components.
Types of Liqui Moly Mos2 Products
It’s important to know that Liqui Moly offers Mos2 in various forms:
- Engine Oil Additives: I use these to boost the protection my regular oil provides.
- Gear Oil Additives: Perfect if you want to enhance your transmission or differential oils.
- Greases with Mos2: These are great for lubrication in bearings or joints where metal-on-metal contact is heavy.
Knowing which type suits your application can save you a lot of hassle.
What to Look for When Buying
Here are some key points I focused on before purchasing:
- Compatibility: Make sure the Mos2 product is compatible with your existing oil or grease. Liqui Moly usually provides clear instructions.
- Concentration: Higher concentration means better protection, but always follow the recommended dosage.
- Packaging Size: Depending on how often you plan to use it, choose a size that fits your needs without wastage.
- Application Method: Some products are easy to add directly to the oil, while others might require specific procedures.
My Tips for Using Liqui Moly Mos2
After using Mos2 additives for a while, I suggest:
- Add the Mos2 additive during an oil change for best results.
- Don’t mix with incompatible products; always read the label.
- Store the product in a cool, dry place to maintain its effectiveness.
Final Thoughts
Buying Liqui Moly Mos2 products has been a game-changer for me in terms of engine and component longevity. By paying attention to the type of product, compatibility, and proper usage, you can get the most out of this advanced lubricant additive. If you want to protect your machinery and improve performance, Liqui Moly Mos2 is definitely worth considering.
Author Profile

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Michael Shirley is the voice behind sleevetext.com. With a background rooted in writing and product observation, he developed an early habit of paying attention to the small details people often overlook. Before launching this site in 2026, he spent years reviewing everyday items informally for friends and colleagues, always focusing on how products actually hold up in real use rather than how they are marketed.
Today, Michael writes with a calm, practical approach shaped by hands-on testing and careful comparison. His goal is to help readers feel confident in their buying decisions by offering clear, experience-based insights. When he’s not researching or writing, he enjoys quiet routines, long walks, and taking time to understand how well-made things fit into daily life.
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