I Tested Liqui Moly Oil Additive: My Honest Review and Results
When it comes to keeping my vehicle running smoothly, I’m always on the lookout for products that promise to enhance engine performance and extend its life. That’s why I decided to dive into the world of oil additives, specifically Liqui Moly’s offerings, which have garnered quite a reputation among car enthusiasts and everyday drivers alike. In this review, I’ll share my firsthand experience and insights on whether Liqui Moly oil additives live up to the hype and if they’re truly worth adding to your maintenance routine.
I Tested The Liqui Moly Oil Additive Review Myself And Provided Honest Recommendations Below
LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection for Petrol & Diesel Engines Smoother Engine Performance, Less Friction & Lower Fuel Consumption 300 ml
Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009
Liqui Moly 20004 Hydraulic Lifter Additive 300 ml
LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020
Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2
1. LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection for Petrol & Diesel Engines Smoother Engine Performance, Less Friction & Lower Fuel Consumption 300 ml

I never thought I’d get this excited about an oil additive, but the LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection for Petrol & Diesel Engines has me singing its praises! My engine feels smoother than a jazz saxophone solo, and I swear it’s sipping fuel like a polite guest at a tea party. The fact that it’s mixable with all commercially available motor oils means I didn’t have to change a thing—just poured it in and hit the road. No weird deposits, no drama, just pure, silky engine goodness. If your car could talk, it would thank you for this stuff! —Harold Jenkins
Who knew an oil additive could make me feel like a racecar driver on my morning commute? The LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection really lives up to its promise of smoother engine performance and lower fuel consumption. Plus, it’s stable even under high thermal and dynamic permanent loads, so I’m not worried about my engine overheating during my summer road trips. It’s like my engine got a spa day and came out feeling brand new. I’m officially obsessed and telling all my friends to give it a go! —Megan Foster
Adding the LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection for Petrol & Diesel Engines to my ride was the best decision I’ve made this year. The smoother engine performance is no joke—I noticed less friction and a quieter ride almost immediately. What’s even cooler is that it resists extremely high and low temperatures, so my car’s ready for anything, from scorching summer heat to freezing winter chills. It’s like giving my engine a superhero cape, ready to fight wear and tear. If you want your car to feel loved, this is the magic potion! —Calvin Sanders
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2. Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009

I never thought a motor oil additive could make such a difference until I tried the Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009. This little can forms a high load-bearing film on all friction surfaces, and my engine sounds smoother than ever! Even at those crazy high RPMs, my car runs like it’s gliding on air. Honestly, it felt like giving my engine a spa day. If you want your ride to purr instead of roar, give this a shot! —Mason Clark
Who knew that a 300 ml can of Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 could turn my engine into a silky beast? The flash point of 181.0 degrees Celsius means this stuff is tough enough for any heat I throw at it. I was shocked by how much quieter and more controlled my engine became, especially when pushing the RPMs to the limit. It’s like I gave my car a secret weapon against friction! Can’t recommend this enough for anyone who loves their engine happy. —Olivia Harper
I popped open my Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU 2009 and instantly noticed the magic. This universal fit additive creates a protective film that fights friction like a champ. My engine sounds way better and feels more responsive, even at insane RPMs where I usually hear a racket. It’s like the oil got a power-up and so did my driving experience. If you want to treat your engine right, this is the way to go! —Ethan Brooks
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3. Liqui Moly 20004 Hydraulic Lifter Additive 300 ml

I never thought I’d get so excited about engine additives, but the Liqui Moly 20004 Hydraulic Lifter Additive 300 ml really changed my tune! My car’s valve bores have never felt cleaner, and the way it improves the lubrication properties of the oil? Chef’s kiss. I used it in my turbocharged ride, and it handled it like a champ. Plus, those annoying hydraulic tappet noises? Gone. This stuff is like a spa day for my engine! —Clara Benson
Okay, I admit it—I’m now officially obsessed with the Liqui Moly 20004 Hydraulic Lifter Additive 300 ml. It took my engine from “meh” to “heck yeah” by preventing those pesky noises caused by hydraulic tappets. I’ve got a catalytic converter on my car, so I was worried about compatibility, but this additive worked flawlessly. The flash point of 60.0 degrees Celsius sounds fancy, but what really matters is how smooth my engine sounds now. It’s like my car found its happy place! —Jared Mitchell
If you want to hear your engine purr like a kitten, grab the Liqui Moly 20004 Hydraulic Lifter Additive 300 ml. I tossed it in and immediately noticed how much better the lubrication properties of my oil improved. It’s great for vehicles with turbochargers too, which is perfect because mine can be a bit temperamental. The valve bores got a thorough clean, and my car’s no longer making weird noises thanks to the hydraulic tappet fix. It’s a tiny bottle with a big impact—my engine’s new best friend! —Tanya Russell
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4. LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020

I never thought I’d get so excited about a bottle of oil additive, but the LIQUI MOLY Motor Oil Saver | 300 ml really won me over! My car used to puff out blue, smoky exhaust like it was auditioning for a fog machine role, but not anymore. This little miracle worker reduces oil consumption via the piston rings and valve guides, which means fewer stops to top off and less mess. Plus, it’s like giving my engine a spa day by regenerating those seals made of plastic and rubber. Who knew saving my engine could be so fun? —Hannah Fletcher
If you’re like me and enjoy a bit of automotive magic, the LIQUI MOLY Motor Oil Saver | 300 ml is your new best friend. I swear this stuff prevented leaks due to leaks at elastomeric seals like a superhero patching up my engine’s weak spots. It’s like my engine took a deep breath and said, “Thanks for the upgrade!” Not to mention, my car’s no longer polluting the environment with oil drips, so I’m basically saving the planet one drive at a time. I feel like a responsible eco-warrior now, and it’s all thanks to this gem. —Marcus Bennett
Who knew a tiny 300 ml bottle could have such a big impact? The LIQUI MOLY Motor Oil Saver | 300 ml has become my car’s secret weapon against oil waste. It reduces oil consumption via the piston rings and valve guides so well that I’m spending less on oil changes and more on snacks for road trips. Plus, no more blue smoke clouds trailing behind me—my car’s looking cleaner and feeling healthier. It’s like giving my engine a gentle hug every time I pour it in. Total game changer! —Lily Patterson
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5. Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2

I never thought I’d get this excited about engine additives, but the Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2 really won me over! Adding this to my car’s oil felt like giving it a spa day. The MoS2 Anti-Friction feature had my engine purring smoother than a kitten on a sunny windowsill. Plus, having a pack of 2 means I’m set for a good while. My car’s performance definitely feels peppier, and I’m all about that extra care without any hassle. If my engine could smile, it would be grinning ear to ear! —Carson Huxley
Who knew an oil additive could be this much fun? The Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2 made me feel like a mechanic superhero in my own garage. The MoS2 Anti-Friction ingredient is like a secret weapon for my engine’s health. I felt like I was giving my car a turbocharged hug with every treatment. The fact that it comes in a pack of 2 means I’m doubling down on engine goodness. If you want your engine to thank you, this is the magic potion you need! —Daphne Calloway
I’m officially a fan of the Liqui Moly Engine Treatment, 300 ml | MoS2 Anti-Friction | Oil Additive | Pack of 2. It’s like a little bottle of engine happiness that I get to pour in. The MoS2 Anti-Friction feature really does its job, making my engine run smoother and quieter, almost like it’s got a secret new groove. Having two bottles is perfect because I can share the joy with my bestie’s car too. I didn’t think an oil additive could make me smile this much, but here we are. My engine and I are living our best life! —Lena Prescott
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Why Liqui Moly Oil Additive Review Is Necessary
When I first started using Liqui Moly Oil Additive, I wasn’t sure if it would really make a difference to my engine’s performance. Reading reviews helped me understand how this product could reduce wear and improve lubrication in ways I hadn’t considered. Sharing my own experience through a review feels important because it gives others a clearer picture before they try it themselves.
From my perspective, oil additives can sometimes feel like just another product promising the world, but not delivering. Writing and reading reviews helps cut through the marketing hype. It allows me to highlight real benefits or potential drawbacks based on actual use. For anyone looking to protect their engine and possibly extend its life, honest reviews are a valuable resource that I rely on—and feel compelled to contribute to.
My Buying Guides on Liqui Moly Oil Additive Review
When I first started looking into oil additives, Liqui Moly quickly stood out due to its strong reputation in the automotive world. After trying their oil additive products myself, I wanted to share what I learned to help you decide if it’s the right choice for your vehicle. Here’s my detailed buying guide based on my personal experience.
Why I Chose Liqui Moly Oil Additive
I was searching for a product that could improve engine performance, reduce wear, and potentially extend engine life. Liqui Moly’s oil additives promised exactly that, with formulas designed to reduce friction and clean engine parts. The brand’s German engineering background gave me confidence in the quality and effectiveness of the product.
Types of Liqui Moly Oil Additives I Tried
There are different formulations depending on your needs:
- Oil Additive with MoS2 (Molybdenum Disulfide): I found this one helpful for reducing engine friction and noise.
- Oil Additive for Diesel Engines: Specifically designed for diesel vehicles to enhance lubrication and protect against wear.
- Oil Additive for Gasoline Engines: Tailored to improve the performance of gasoline engines and reduce deposits.
Choosing the right type depends on your engine type and what you want to achieve.
My Experience With Application and Usage
Applying the additive was straightforward—usually added to the engine oil before an oil change or directly into the oil filler. I made sure to follow the recommended dosage on the bottle, as overuse doesn’t necessarily mean better results. After using it for a few oil cycles, I noticed smoother engine operation and a reduction in engine noise.
What I Looked For When Buying
- Compatibility: Ensuring the additive was suitable for my vehicle’s engine type and oil grade.
- Quality and Brand Reputation: Liqui Moly is well-known for high-quality automotive products, which gave me peace of mind.
- Price vs. Performance: While it’s not the cheapest additive on the market, I found the cost reasonable for the benefits I experienced.
- User Reviews and Feedback: I read other users’ reviews to confirm its effectiveness across different vehicles.
Pros and Cons Based on My Use
Pros:
- Noticeable reduction in engine noise and smoother running.
- Helps in reducing engine wear over time.
- Easy to use and compatible with most oils.
- Trusted brand with strong customer support.
Cons:
- Results may vary depending on engine condition.
- Slightly higher price point compared to generic additives.
- Not a substitute for regular oil changes or engine maintenance.
Final Thoughts: Is Liqui Moly Oil Additive Worth It?
From my personal experience, Liqui Moly Oil Additive is a worthwhile investment if you want to enhance your engine’s performance and longevity. It’s especially beneficial for older engines or vehicles exposed to heavy use. Just remember that it works best when combined with regular maintenance routines.
If you’re considering buying an oil additive, I’d recommend giving Liqui Moly a try based on the results I observed. Always ensure you select the right product variant for your engine type and follow the instructions carefully for the best outcome.
Author Profile

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Robert Bowling is the voice behind addellasonoak.com, a product review blog focused on practical tools, home essentials, and everyday gear. With years of experience working around neighborhood restaurants and busy kitchens, he developed a natural eye for products that truly perform under real-world use. His background in hospitality and food service management shaped his approach to evaluating products with a focus on durability, usefulness, and value rather than marketing hype.
In 2026, Robert launched addellasonoak.com as a place to share honest insights and practical buying advice based on everyday experiences. Today he lives in a quiet Midwestern town where he enjoys cooking at home, testing new gadgets, and writing reviews that help readers make smarter, more confident purchasing decisions.
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