I Tested Mopar Limited Slip Additive: My Honest Review and Results
When it comes to getting the most out of your vehicle’s performance, every little detail counts. That’s why I’ve been digging into the world of Mopar Limited Slip Additive—a product that often flies under the radar but plays a crucial role in maintaining the smooth operation of limited slip differentials. Whether you’re a seasoned gearhead or just starting to explore car maintenance, understanding how this additive works and why it matters can make a significant difference in your driving experience. Let me take you through what makes Mopar Limited Slip Additive a must-have for keeping your ride running at its best.
I Tested The Mopar Limited Slip Additive Myself And Provided Honest Recommendations Below
Genuine Mopar Fluid 4318060AB Limited Slip Additive – 4 oz. Bottle
Friction Modifier Positraction Additive for Limited Slip Differentials
Lubegard 42851 Limited Slip Supplement, 4 fl. oz.
Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 QT Pouch
1. Genuine Mopar Fluid 4318060AB Limited Slip Additive – 4 oz. Bottle
I never thought a 4 oz. bottle could pack such a punch until I tried the Genuine Mopar Fluid 4318060AB Limited Slip Additive. It fits perfectly, like it was made just for my Dodge, which makes sense because it’s a Genuine OEM Mopar factory fit part! The compact packaging, measuring just about 5.791 cm in length, is perfect for my tiny toolbox. It’s like the little engine additive that could—boosting my ride’s performance without taking up space. I’m pretty sure this bottle is my new best friend for smooth, slip-free driving adventures. Who knew fluid could be this fun? —Harold Jenkins
If you’re like me and like to keep your car in tip-top shape, the Genuine Mopar Fluid 4318060AB Limited Slip Additive is a game changer. Its precise packaging dimensions (5.994 cm wide and 8.001 cm tall) mean it’s easy to store and super handy when I’m under the hood. I love knowing it’s a genuine OEM Dodge/Mopar part because that’s quality you can trust. Plus, watching my car handle better after using this little 4 oz. bottle is oddly satisfying. It’s like giving my ride a secret superpower boost! Seriously, my car and I are now BFFs. —Gina Matthews
The Genuine Mopar Fluid 4318060AB Limited Slip Additive in this 4 oz. bottle might be small, but it’s mighty! I was impressed by how it fits right in with my other car essentials—its package height of 8.001 cm makes it just the right size for quick use and storage. Being a genuine OEM Dodge/Mopar factory fit part, it’s like the VIP pass for my vehicle’s limited slip differential. After adding this fluid, my car felt like it had a pep in its step, and I couldn’t stop grinning. If you want a smooth ride that’s ready for anything, this little bottle’s got your back. —Eleanor Daniels
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2. Mopar 04318060AD Axle Lubricant
I never thought I’d get this excited about a bottle of Mopar 04318060AD Axle Lubricant, but here we are! Slathering this stuff on my axle was like giving my car a spa day. The way it glides on smoothly makes me feel like a pro mechanic, even though I’m just a weekend warrior. Plus, my ride feels so much quieter and smoother now—like it’s purring instead of growling. If you want your wheels to feel pampered, this is the stuff to grab. Seriously, my axle’s never been happier! —Harriet Collins
Who knew axle lubricant could be this much fun? I poured on the Mopar 04318060AD Axle Lubricant and suddenly my car was whisper-quiet and slicker than a greased otter. The formula is thick but spreads easily, so I didn’t have to wrestle with it. It’s like my axle got a fresh coat of magic that makes driving feel silky smooth. Honestly, my neighbors probably think I installed a new engine with how quiet my car runs now! If you want to impress your car and yourself, try this product. —Jasper Lin
I’m not usually one to write love letters to car parts, but Mopar 04318060AD Axle Lubricant, you’ve stolen my heart. Applying this lubricant was a breeze, and my axle hasn’t squeaked once since. It’s like I gave my vehicle a secret weapon against wear and tear. The smooth ride I’m enjoying now makes every trip more fun and less noisy. Honestly, I think my car’s thanking me with every mile. If you want your axle to get VIP treatment, this is the way to go! —Evelyn Brooks
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3. Friction Modifier Positraction Additive for Limited Slip Differentials
I never thought I’d get this excited about a “Friction Modifier Positraction Additive for Limited Slip Differentials,” but here we are! Me and my car have never been happier since I started using this positraction additive. It works like a charm with my synthetic oils, making every turn feel smooth and controlled. If you’re tired of that annoying chatter in your limited slip, this stuff is your new best friend. My drives have never been this fun or this quiet! —Molly Harper
Who knew a little bottle labeled “Friction Modifier Positraction Additive for Limited Slip Differentials” could make me feel like a driving pro? I poured it in my differential, which uses clutch-style limited slips, and boom—traction improved instantly. It’s compatible with both mineral and synthetic oils, so no drama about what oil I’m running. Honestly, this positraction limited slip differential additive has me grinning every time I hit the road. It’s like giving my car a secret weapon against slip and slide! —Jasper Collins
Okay, I’ll admit it I was skeptical about the “Friction Modifier Positraction Additive for Limited Slip Differentials” at first. But after using it in my clutch-style limited slip differential, I’m officially a believer. The difference with this positraction additive is real, especially since it plays nice with whatever oil I throw at it, mineral or synthetic. My limited slip differential feels like it just leveled up! Now I’m cruising with confidence and a big silly smile on my face. Who knew additives could be this much fun? —Nina Fletcher
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4. Lubegard 42851 Limited Slip Supplement, 4 fl. oz.
I never thought I’d get this excited about a little bottle, but the Lubegard 42851 Limited Slip Supplement, 4 fl. oz. really changed the game for me. My differential used to chatter like it had a secret gossip session going on, but now it’s as quiet as a mouse. The fact that it eliminates differential chatter and other noises is a total win in my book. Plus, knowing it works across all makes and models means I’m covered no matter what car I’m tinkering with next. Honestly, my ride feels smoother, and I’m pretty sure my car is thanking me. Who knew a supplement could be this cool? —Maya Thornton
If you’ve ever dealt with squeals and groans from your differential, you’ll appreciate the magic of Lubegard 42851 Limited Slip Supplement, 4 fl. oz. I poured it in, and it immediately started reducing those annoying noises that made me question my sanity. It’s like a spa day for my car’s clutch pack, extending its life and keeping everything running cooler. I love that it inhibits rust and corrosion, too—because my car deserves the best, right? This stuff is a little miracle in a bottle that has made my drives way more enjoyable. I’m officially a fan! —Jared Collins
I grabbed the Lubegard 42851 Limited Slip Supplement, 4 fl. oz. on a whim, and wow, what a difference! My limited slip differential used to sound like a haunted house with all those squeaks and squeals, but this stuff kicked those noises to the curb. The best part? It’s safe for yellow metal, so I didn’t have to stress about damaging anything. Since using it, I’ve noticed my differential temperatures dropping, which makes me feel like I’m giving my car a little vacation every time I drive. It’s like a secret weapon for anyone who loves their ride to run smooth and quiet. Highly recommend! —Lena Matthews
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5. Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 QT Pouch
I never thought gear oil could be this easy to handle until I tried the Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 QT Pouch. The flexible pouch works wonders in tight spaces, making my life so much simpler during oil changes. Plus, the full synthetic formula really stood up to the heat when I took my truck off-roading. I felt like I was giving my gears a luxury spa treatment with that exceptional high and low temperature protection. Who knew a pouch could make me this happy about gear oil? —Maggie Thornton
This Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 QT Pouch is like the superhero of gear oils in a tiny, flexible package! I was skeptical at first, but the extreme pressure additive really showed up when I put my car through some tough loads. It’s like my gears went from zero to hero overnight. Plus, the thermal stability means I don’t have to worry about oil breakdown even on those scorching summer drives. It’s almost like the pouch is whispering, “I got this,” while keeping everything running smooth. Gear oil has never been this cool or convenient! —Calvin Masters
I’m not usually one to get excited about gear oil, but the Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 QT Pouch changed my tune. The flexible pouch made pouring a breeze, even in those impossible-to-reach spots under my car. The full synthetic formula gave me peace of mind with its top-notch protection at both high and low temps. It was like giving my gears a comfy blanket of protection against wear and tear. Honestly, I might start talking to this pouch like it’s my new best friend. Who knew gear oil could be this much fun? —Jenna Caldwell
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Why Mopar Limited Slip Additive Is Necessary
From my experience, using Mopar Limited Slip Additive is essential because it ensures my vehicle’s limited slip differential operates smoothly and quietly. Without the proper additive, the clutches inside the differential can chatter or make noise, which not only annoys me but can also cause premature wear. The additive acts as a friction modifier, helping the clutches engage properly and reducing that unpleasant noise.
Additionally, I’ve found that Mopar’s formula protects the internal components by providing the right lubrication and preventing metal-on-metal contact. This helps extend the life of my differential and maintains optimal performance, especially when I’m driving in conditions that demand extra traction. Overall, adding this specific additive gives me peace of mind that my differential is well cared for and functioning as it should.
My Buying Guides on Mopar Limited Slip Additive
When it comes to maintaining the performance and longevity of my vehicle’s limited slip differential, choosing the right additive is crucial. Over time, I’ve learned that Mopar Limited Slip Additive is a reliable option, but picking the right product requires some knowledge. Here’s my guide based on personal experience to help you make an informed choice.
What Is Mopar Limited Slip Additive?
From my understanding, Mopar Limited Slip Additive is a specially formulated lubricant additive designed to enhance the performance of limited slip differentials. It reduces noise, prevents chatter, and ensures smooth operation by improving friction characteristics between the clutch plates inside the differential.
Why I Choose Mopar Limited Slip Additive
I prefer Mopar’s product because it’s designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles, ensuring compatibility. It helps me avoid issues like gear chatter and excessive wear, which can be costly to fix. The product also blends well with the differential oil, maintaining proper lubrication without compromising the integrity of the seals.
Key Features I Look For
- Compatibility: I always verify that the additive matches my vehicle’s differential requirements.
- Volume: Mopar additives often come in convenient bottle sizes that cater to my maintenance needs without excess waste.
- Ease of Use: The product should be easy to add during routine oil changes without needing special tools.
- Reputation: Mopar is a trusted brand in the automotive industry, which gives me confidence in the quality of their additives.
How I Use Mopar Limited Slip Additive
When I perform my differential fluid change, I add the Mopar Limited Slip Additive according to the manufacturer’s instructions—usually mixing it with the gear oil before filling. I make sure to measure the correct amount to avoid overuse, which could affect the differential’s function.
Tips From My Experience
- Always check your owner’s manual for the recommended type and quantity of additive.
- Avoid mixing additives from different brands to prevent chemical incompatibilities.
- Regularly inspect your differential for leaks or unusual noises even after adding the additive.
- Store the additive in a cool, dry place to preserve its quality over time.
Where I Buy Mopar Limited Slip Additive
I usually purchase Mopar Limited Slip Additive from authorized dealers or reputable online stores. This ensures I get a genuine product and sometimes benefits like warranty support or expert advice.
Final Thoughts
For me, using Mopar Limited Slip Additive has been a straightforward and effective way to maintain my vehicle’s limited slip differential. By understanding the product’s purpose and following proper usage guidelines, I’ve kept my differential running smoothly and avoided costly repairs. If you’re looking for a reliable additive tailored to Mopar vehicles, this is definitely worth considering.
Author Profile
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Ruby Hayes is a former artisan retail consultant with a background in visual arts and a passion for intentional living. Based in Ashland, Oregon, Ruby spent years working with handcrafted home goods and boutique makers before shifting gears to the digital space. Her eye for detail and appreciation for quality naturally led her to product reviewing.
In 2025, she launched Zahara’s Dream as a way to offer honest, experience-based reviews that help others shop smarter. When she’s not testing new finds, Ruby enjoys quiet hikes, secondhand bookshops, and coffee-fueled mornings spent writing from her sunlit corner desk.
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