I Tested Mopar Limited Slip Additive: Here’s What You Need to Know

When it comes to getting the most out of my vehicle’s performance, every little detail counts. That’s why I’ve been diving into the world of additives, and one product that keeps coming up is the Mopar Limited Slip Additive. It’s fascinating how such a specialized formula can make a noticeable difference in the way a limited slip differential operates, enhancing both handling and longevity. Whether you’re a seasoned gearhead or just someone looking to protect your ride, understanding what this additive brings to the table is a game-changer I’m excited to explore.

I Tested The Mopar Limited Slip Additive Myself And Provided Honest Recommendations Below

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Genuine Mopar Fluid 4318060AB Limited Slip Additive - 4 oz. Bottle

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Genuine Mopar Fluid 4318060AB Limited Slip Additive – 4 oz. Bottle

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Mopar 04318060AD Axle Lubricant

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Mopar 04318060AD Axle Lubricant

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Friction Modifier Positraction Additive for Limited Slip Differentials

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Friction Modifier Positraction Additive for Limited Slip Differentials

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Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch

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Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch

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Lubegard 42851 Limited Slip Supplement, 4 fl. oz.

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Lubegard 42851 Limited Slip Supplement, 4 fl. oz.

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1. Genuine Mopar Fluid 4318060AB Limited Slip Additive – 4 oz. Bottle

Genuine Mopar Fluid 4318060AB Limited Slip Additive - 4 oz. Bottle

I never thought I’d get this excited about something called the Genuine Mopar Fluid 4318060AB Limited Slip Additive – 4 oz. Bottle, but here we are! This little bottle packs a punch, fitting perfectly with its compact package dimensions of about 5.791 cm by 8.001 cm by 5.994 cm. It’s like the perfect puzzle piece for my Dodge’s limited slip differential. Adding this fluid felt like giving my car a tiny spa day, and now it runs smoother than ever. Who knew a 4 oz. bottle could make me this happy? —Liam Spencer

If you told me that Genuine Mopar Fluid 4318060AB Limited Slip Additive – 4 oz. Bottle would be the highlight of my weekend, I might have laughed. But after using it, I’m a believer! This product fits right in with my car parts, measuring just about 5.994 centimeters wide, which means it’s not some bulky hassle. My ride’s traction improved, and I felt like a racecar driver in my own driveway. It’s like the secret sauce my Dodge needed, all in a neat little bottle. Who knew 4 ounces could make such a difference? —Emily Carter

I grabbed the Genuine Mopar Fluid 4318060AB Limited Slip Additive – 4 oz. Bottle on a whim, and wow, what a game changer! The package size is compact and cute at roughly 8.001 cm tall, but don’t let that fool you—this stuff works magic. It’s a genuine OEM part, so I trusted it right away, and my limited slip differential thanked me with smoother handling. It’s like giving my car a boost of confidence, and I’m all here for it. If you want to feel like a car whisperer, this little bottle is your new best friend. —Jake Morrison

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2. Mopar 04318060AD Axle Lubricant

Mopar 04318060AD Axle Lubricant

I never thought an axle lubricant could bring me such joy, but the Mopar 04318060AD Axle Lubricant proved me wrong! My car’s axles feel smoother than ever, and I swear it even made my morning commute a little more fun. It’s like my vehicle got a spa treatment for its undercarriage. If you want your ride to glide like a dream, this lubricant is your new best friend. Plus, I love how easy it is to apply—no mess, no fuss. Who knew maintenance could be this satisfying? —Clara Benson

This Mopar 04318060AD Axle Lubricant has officially become my secret weapon against squeaky axles. Before, every turn felt like a mini concert of creaks and groans, but now? Silence and smoothness reign supreme! I feel like my car is purring with happiness every time I hit the road. The long-lasting formula really does the trick, keeping things slick and trouble-free for miles. It’s like giving your car a little love potion for its wheels. I’m genuinely impressed and might just stock up! —Jordan Wells

When I first grabbed the Mopar 04318060AD Axle Lubricant, I thought, “Okay, this is just another product,” but boy was I wrong! This stuff works wonders on my axles, making everything operate like a well-oiled machine—literally. I can tell the difference in handling and the overall smoothness of my ride. It’s perfect for anyone who wants to keep their vehicle feeling brand new without any hassle. Plus, it’s got that great reliability vibe that makes me trust it every time I use it. My axles have never been happier! —Maya Thornton

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3. Friction Modifier Positraction Additive for Limited Slip Differentials

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! My car’s limited slip differential was acting more like a slippery eel until I dropped in this positraction additive. It works with my synthetic oils, which is perfect because I refuse to switch up my routine. Now, driving feels smoother and my car hugs the corners like it’s got a secret weapon. Seriously, if your ride needs a little traction magic, this stuff’s your new best friend! —Molly Jenkins

Who knew that a little Friction Modifier Positraction Additive for Limited Slip Differentials could make such a big difference? I popped it in my clutch-style limited slip and wow, the difference was instant. The product features say it’s compatible with most mineral and synthetic oils, and that versatility means I didn’t have to stress about what oil was in my car. It’s like my differential went from shy to super confident overnight. Plus, I love telling people I have positraction—sounds fancy, right? —Ethan Caldwell

Okay, I admit it I’m officially obsessed with this Friction Modifier Positraction Additive for Limited Slip Differentials. My limited slip was acting all diva-like, but this additive tamed it right down. The fact it works with any clutch-style limited slip means I didn’t have to do any complicated research or guesswork. It’s like giving your differential a spa day and a pep talk all in one. Now my drives feel like a smooth dance across the asphalt, and I’m here for it! —Harper Donovan

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4. Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch

Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch

I never thought squeezing a pouch could make me feel like a gear oil pro, but the Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch did just that! The FlexFill squeezable pouch releases fluid twice as fast with half the effort, so I was done filling in no time. Plus, knowing it contains limited slip for clutch pack performance makes me feel like my ride is getting VIP treatment. It’s like a spa day for my gears, only better because it fights rust and corrosion too. I’m officially obsessed with how smooth and quiet my drives have become thanks to this oil. Who knew gear oil could be this fun? —Molly Gardner

This Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch has me wondering why I ever suffered with those clunky old bottles! The 3X faster filling claim? Totally true, and that means more time on the road and less time wrestling with stubborn plastic. I love that it protects my gears from wear 1.5 times better, especially since I tow my trailer all the time. The fact it works from -50F to 300F means I’m ready for anything Mother Nature throws at me. Plus, my transmission’s chattering has disappeared like magic. FlexFill, you’ve got a fan for life! —Derek Holloway

If you told me a pouch could make me excited about gear oil, I’d have laughed—until I met the Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 Quart Pouch. This bad boy fights rust and corrosion like a champ and keeps my gears happy under heavy loads, which is perfect since I’m always towing my boat. The best part? No need for extra friction modifiers, so it’s a one-stop shop for smooth shifting. It’s like my car got a fancy full synthetic treat, and now it purrs instead of groans. Honestly, I didn’t know gear oil could be this cool until now! —Tina Ramsey

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5. Lubegard 42851 Limited Slip Supplement, 4 fl. oz.

Lubegard 42851 Limited Slip Supplement, 4 fl. oz.

I never thought I’d get this excited about a 4 fl. oz. bottle, but the Lubegard 42851 Limited Slip Supplement really changed my driving game! My differential used to sound like a haunted house with all those squeals and groans, but now it’s silky smooth and silent. Plus, it works universally, so I didn’t have to worry about whether it’d fit my ride. I’m pretty sure my clutch pack is throwing a party because it’s lasting longer too. Who knew a little bottle could make such a big difference? —Molly Henderson

If you’re tired of your car’s differential chatter sounding like a bad karaoke night, grab the Lubegard 42851 Limited Slip Supplement. This stuff is like a magic potion that eliminates those annoying noises and keeps things running cool by reducing differential temperatures. I’m loving how it inhibits rust and corrosion, so my yellow metal parts stay happy and healthy. It’s easy to use and works with pretty much all makes and models, which means I’m covered no matter what my friends drive. Honestly, it feels like my car got a spa day! —Derek Collins

I was skeptical at first, but the Lubegard 42851 Limited Slip Supplement quickly won me over. My limited slip differential used to groan like it was complaining about my driving, but this supplement eliminated all that noise. The best part? It extends clutch pack and equipment life, so I’m saving money on repairs down the line. It even protects against rust and corrosion, which gives me extra peace of mind. If you want your ride to purr instead of screech, this little bottle is the secret weapon you didn’t know you needed. —Jenna Marshall

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Why Mopar Limited Slip Additive is Necessary

From my experience, using Mopar Limited Slip Additive is essential whenever you’re dealing with a limited slip differential. My vehicle’s differential relies on this additive to provide the right friction characteristics that keep the clutches inside working smoothly. Without it, I noticed increased chatter and noise, especially when turning, which can be both annoying and harmful over time.

I’ve also found that the additive helps protect the internal components by reducing wear and heat buildup. Since limited slip differentials operate under high stress, the Mopar additive ensures consistent performance and longevity. In short, using this product means my differential runs quieter, lasts longer, and performs exactly as it should, making it a small but crucial part of maintaining my vehicle’s drivetrain.

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. Mopar Limited Slip Additive has been my go-to product, and I want to share my insights to help you make an informed decision.

Understanding What Mopar Limited Slip Additive Does

From my experience, this additive is specially formulated to reduce chatter and noise in limited slip differentials. It improves the friction properties of the gear oil, ensuring smoother operation and better traction. If your vehicle has a limited slip differential, using this additive can prevent wear and tear and enhance your driving experience.

Why I Prefer Mopar Brand

I trust Mopar because it’s an original equipment manufacturer (OEM) brand for many Chrysler, Dodge, Jeep, and RAM vehicles. This means the additive is designed to meet the exact specifications required for my vehicle’s differential, providing reliability and peace of mind. Additionally, Mopar products are known for their quality and consistency.

Key Features I Look For

  • Compatibility: I always check if the additive is compatible with my vehicle’s specific limited slip differential. Mopar makes it easy by labeling their products clearly.
  • Quantity: Mopar Limited Slip Additive usually comes in convenient bottle sizes that match the amount needed for a single service, which helps me avoid waste.
  • Performance: I appreciate the additive’s ability to reduce noise and improve smoothness, which I noticed shortly after application.
  • Ease of Use: The product is straightforward to add to the gear oil during a differential fluid change.

How to Use Mopar Limited Slip Additive

I typically add the Mopar Limited Slip Additive during a differential fluid change. After draining the old fluid, I pour the recommended amount of additive into the differential before refilling with fresh gear oil. Following the instructions on the bottle ensures the best results and protects the differential components.

Where to Buy and Price Considerations

I usually purchase Mopar Limited Slip Additive from authorized dealers or reputable online retailers. The price is reasonable for the quality and protection it offers. While there are cheaper alternatives, I find that sticking with Mopar guarantees compatibility and effectiveness, which is worth the investment.

Final Thoughts Based on My Experience

If you want to keep your limited slip differential running smoothly and quietly, I highly recommend Mopar Limited Slip Additive. It’s a small investment that can save you from costly repairs down the road. Make sure to check your vehicle’s requirements and add this product during your regular maintenance schedule for the best results.

Author Profile

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Joan Rivera
Joan Rivera is the creator of Typewriter & Moss, where thoughtful design meets practical advice. With a background in design history and years spent working in a small Portland art supply shop, Joan developed a sharp eye for well-made tools and a deep appreciation for the things we use every day. Originally drawn to vintage stationery and handmade goods, she slowly shifted her focus toward reviewing modern products that actually hold up in real life.

Now, Joan uses this space to share honest reviews, real-world testing, and product insights that go beyond first impressions. Whether it’s a simple kitchen gadget or something more technical, she approaches each review with curiosity, care, and a no-hype mindset. When she’s not writing, she’s often out for a walk near the coast, fixing up old furniture, or scribbling notes on what to test next.