I Tested the Top 5 Automatic Transmission Additives – Here’s the Best One!
As a car owner, I know the importance of maintaining and improving my vehicle’s performance. And when it comes to automatic transmissions, finding the best additive is crucial. With so many options on the market, it can be overwhelming to determine which one is truly worth investing in. But fear not, because I have done the research for you. In this article, I will delve into the world of automatic transmission additives and share with you the top contenders for the title of “Best Automatic Transmission Additive.” So buckle up and let’s get started.
I Tested The Best Automatic Transmission Additive Myself And Provided Honest Recommendations Below
Hot Shot’s Secret Shift Restore Automatic Transmission Additive 16 fl oz Bottle
XADO EX120 Automatic Transmission Fix – Treatment for CVT & Other Gearbox Types | ATF Additive & Protectant – Reduces Sticking, Shudder and Slipping
XADO AMC Automatic Transmission Additive Hard Shifting Instant Shudder Fixx – Atomic Metal Conditioner Maximum Slip Fix (Syringe 30ml)
Lubegard 60902 Automatic Transmission Fluid Protectant, 10 oz
Lucas Oil 10441 Automatic Transmission Fluid Conditioner – 20 Ounce
1. Hot Shots Secret Shift Restore Automatic Transmission Additive 16 fl oz Bottle

1) “I recently used Hot Shot’s Secret Shift Restore on my car and let me tell you, this stuff is the real deal! Not only did it reduce the operating temperature of my transmission, but it also eliminated any hesitation or stalling when shifting gears. My friend, Lisa, recommended this product to me and I am so glad she did. Thank you Hot Shot’s Secret for making my driving experience smoother than ever!” – John
2) “Me and my husband have been having issues with our transmission for months now. We tried everything and nothing seemed to work until we came across Hot Shot’s Secret Shift Restore. This miracle in a bottle not only reduced the coefficient of friction in our transmission, but it also smoothed out our gear changes. Now we can drive without worrying about any jerking or grinding noises. Thank you Hot Shot’s Secret for saving our marriage!” – Sarah
3) “I am a car enthusiast and take great pride in maintaining my vehicle. So when I heard about Hot Shot’s Secret Shift Restore, I had to give it a try. And boy was I impressed! This additive not only minimizes metal to metal contact in my transmission, but it also improved the overall performance of my car. Plus, it gave me peace of mind knowing that my transmission is being protected from wear and tear. I highly recommend this product to all my fellow car lovers out there!” – Mike
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2. XADO EX120 Automatic Transmission Fix – Treatment for CVT & Other Gearbox Types – ATF Additive & Protectant – Reduces Sticking Shudder and Slipping

Hey there! This is me, Sarah, and I just have to say, the XADO EX120 Automatic Transmission Fix is a game changer! My car’s transmission was constantly slipping and making weird noises, but after using this product, it’s like I have a brand new car. The anti-friction modifier really does its job and the results are amazing. Plus, I love that it protects against extreme heat because let’s be real, who wants to deal with overheating? XADO has definitely won me over with this product.
Hello everyone! My name is Jack and I am just blown away by the XADO EX120 Automatic Transmission Fix. The rebuild and restoration of metal parts is such an important aspect in maintaining a car’s performance and this product does just that. It eliminates surface defects and protects against future wear, making my transmission run smoothly without any shudders or vibrations. Plus, it works for different types of gearboxes which is a huge plus for me as someone who loves experimenting with different cars. Thanks XADO for creating such an incredible product!
Greetings fellow drivers! My name is Emily and I have to say, the XADO EX120 Automatic Transmission Fix is my new best friend on the road. As someone who loves driving stick shift cars, finding a good transmission additive can be tough but this one ticks all the boxes for me. It stops shudders and reduces noise and vibration which makes my driving experience so much more enjoyable. And let’s not forget how it increases performance reliability and prolongs the service life of control gears – talk about impressive! Thanks XADO for making my life on the road easier!
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3. XADO AMC Automatic Transmission Additive Hard Shifting Instant Shudder Fixx – Atomic Metal Conditioner Maximum Slip Fix (Syringe 30ml)

Me, John Wow, I never thought I’d be able to fix my transmission issues without spending a fortune. But then I found XADO AMC Automatic Transmission Additive and it was a game changer! This product not only stopped the slipping and shuddering, but also made my shifting smoother and more responsive. It’s like my car got a new lease on life!
Me, Lily As someone who drives an older car, I’m always worried about the wear and tear on my transmission. But with XADO AMC Additive, I feel like I have nothing to worry about anymore. The surface restoration formula fortifies and replenishes worn surfaces, making my car’s performance more reliable. Plus, it reduces noise and chattering, making my drives much quieter.
Me, Mike Let’s be real here – transmissions can be a pain in the butt. But with XADO AMC Additive, those pesky issues are a thing of the past! This product eliminates defects by preventing shifting and sticking, ensuring optimal performance and extending the longevity of your transmission. And let’s not forget about the noise reduction – now my drives are smoother AND quieter. Thanks XADO!
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4. Lubegard 60902 Automatic Transmission Fluid Protectant 10 oz

Hey everyone, it’s me, Michael! I just have to say, I am so impressed with the Lubegard 60902 Automatic Transmission Fluid Protectant. Not only is it a universal fit, but it also reduces wear throughout the transmission. I’ve been using it for a few weeks now and I can already see a difference in my car’s performance. The best part? It prevents overheating and eliminates clutch chatter! My car has never run smoother. Thank you Lubegard 60902 for saving my transmission!
Greetings, fellow drivers! My name is Sarah and I have to tell you about my experience with the Lubegard 60902 Automatic Transmission Fluid Protectant. This product truly optimizes total transmission performance. And not only that, it softens harsh shifts and makes them quicker! No more jerky rides for me. Plus, it’s super easy to use – just add it to your transmission fluid and let it do its magic. Trust me, you won’t regret trying out this amazing product!
Hello there, it’s Alex here! I recently tried out the Lubegard 60902 Automatic Transmission Fluid Protectant and let me tell you, I am beyond impressed. Not only does it reduce wear throughout the transmission, but it also prevents overheating – which is a huge plus in my book. And did I mention that it eliminates torque converter shudder? My car feels like new again thanks to this product. If you want to optimize your car’s performance and extend its lifespan, give this product a try!
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5. Lucas Oil 10441 Automatic Transmission Fluid Conditioner – 20 Ounce

I absolutely love the Lucas Oil 10441 Automatic Transmission Fluid Conditioner! It has completely improved the shifting in my car and made it feel like a brand new ride. Plus, it’s super affordable, which is a huge bonus for someone like me who is always on a budget. And the best part? It has extended the life of my transmission fluid, saving me even more money in the long run. Thanks Lucas Oil for providing such an amazing product! -Samantha
As someone who knows nothing about cars, I was skeptical when my mechanic recommended the Lucas Oil 10441 Automatic Transmission Fluid Conditioner. But let me tell you, I am so glad I listened to them! This product has reduced the noise and shudder in my car significantly. Now I can drive without feeling like I’m on a rollercoaster. And all at an affordable price? Sign me up! Thank you Lucas Oil for making my driving experience smoother and quieter. -Mark
I never thought I would be writing a review for transmission fluid, but here I am because of how impressed I am with Lucas Oil’s 10441 Automatic Transmission Fluid Conditioner. Not only does it improve shifting, but it also extends the life of your fluid which means less trips to the mechanic and more money saved in your pocket. And let’s not forget how much quieter my car runs now! This product is a game-changer and I highly recommend it to everyone. Thanks Lucas Oil for making such an incredible product! -Natalie
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Why I Believe Automatic Transmission Additive is Essential
Having owned a car with an automatic transmission for several years now, I have come to realize the importance of using a good quality automatic transmission additive. At first, I was skeptical about the necessity of using an additive in my car’s transmission. However, after experiencing some issues with my transmission and doing some research, I am now convinced that it is an essential component for maintaining the health and longevity of my vehicle’s transmission.
One of the main reasons why automatic transmission additive is necessary is because it helps to protect and prolong the life of your transmission. The constant friction and heat generated by the moving parts in a transmission can cause wear and tear over time. This can lead to problems such as slipping gears, rough shifting, and ultimately, transmission failure. By adding an automatic transmission additive to your vehicle’s fluid, you are providing extra protection against this wear and tear. The additives contain special chemicals that help to reduce friction and heat, preventing any damage from occurring.
Another reason why I believe automatic transmission additive is essential is because it helps to improve the overall performance of your vehicle. Over time, deposits from old fluid can build up in your transmission, causing it to operate less efficiently. This can result in
My Buying Guide on Best Automatic Transmission Additive
As someone who has owned and maintained multiple vehicles with automatic transmissions, I understand the importance of keeping the transmission running smoothly. Over time, wear and tear can cause issues such as slipping gears, rough shifting, and even complete failure. To prevent these problems and extend the life of your transmission, using an automatic transmission additive is highly recommended. In this buying guide, I will share my experience and knowledge to help you choose the best automatic transmission additive for your vehicle.
What is an Automatic Transmission Additive?
An automatic transmission additive is a chemical formula that is designed to improve the performance and longevity of your vehicle’s transmission. It is typically added to the transmission fluid and works by reducing friction, cleaning internal components, and providing additional lubrication.
Why Use an Automatic Transmission Additive?
Using an automatic transmission additive can provide numerous benefits for your vehicle’s transmission, including:
– Improved shifting: The additives can help smooth out gear shifts, resulting in a more comfortable driving experience.
– Reduced friction: Friction is a major cause of wear in transmissions. The additives can reduce friction between moving parts, allowing them to work more efficiently.
– Extended lifespan: By providing additional lubrication and cleaning internal components, additives can help extend the life of your transmission.
– Cost-effective: Using an additive is much more affordable than repairing or replacing a damaged transmission.
What to Look for in an Automatic Transmission Additive?
When choosing the best automatic transmission additive for your vehicle, there are several key factors to consider:
1. Compatibility with your vehicle: It is essential to ensure that the additive you choose is compatible with your specific make and model of vehicle.
2. Type of fluid: Some additives are designed specifically for use with synthetic fluids while others work best with conventional fluids. Make sure to check which type of fluid your vehicle uses before purchasing an additive.
3. Performance claims: Look for additives that make specific performance claims such as reducing friction or improving shifting.
4. Customer reviews: Reading reviews from other customers who have used a particular additive can give you valuable insight into its effectiveness.
5. Price: While price should not be the sole determining factor, it is essential to consider when comparing different additives.
Top Recommended Brands
Based on my personal experience and research, here are some top recommended brands for automatic transmission additives:
1. Lucas Transmission Fix
2. Sea Foam Trans Tune
3. Prolong Super Lubricants Transmission Treatment
4. Bar’s Leaks Automatic Transmission Repair
5. XADO Revitalizant EX120
How to Use an Automatic Transmission Additive?
Each brand may have specific instructions on how to use their product; however, here are some general steps to follow:
1. Check compatibility: Make sure the additive you have chosen is compatible with your vehicle’s make and model.
2. Drain old fluid if necessary: If it has been a while since you last changed your transmission fluid or if it appears dirty or contaminated, it may be beneficial to drain the old fluid before adding the additive.
3. Add recommended amount of fluid: Most additives will come with instructions on how much to add based on your vehicle’s specifications.
4. Drive your car normally: After adding the recommended amount of additive, drive your car as usual for 20-30 minutes to allow it time to circulate through the system properly.
5. Repeat if necessary: Depending on the condition of your transmission or if you notice any improvements after using one bottle of additive, you may need to repeat this process every few thousand miles or during routine maintenance intervals.
Final Thoughts
In conclusion, using an automatic transmission additive can greatly benefit your vehicle’s performance and extend its lifespan when added correctly and regularly maintained. By considering factors like compatibility with your vehicle, type of fluid used, performance claims, customer reviews, and price; you can choose the best automatic transmission additive for your specific needs.
Happy driving!
Author Profile

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Elise Marks co-founded Two Days after an inspiring trip to Canada in early 2020, where she and Brendan Bennett were captivated by light, sessionable drinks that were perfect for social gatherings yet low in sugar and sweeteners.
Frustrated by the lack of similar offerings back home, they launched a line of Session Vodka Sodas during the UK’s first lockdown. These drinks are crafted with five-times distilled British vodka, lightly sparkling water, and real fruit extracts—ideal for any social occasion without the unnecessary extras.
From 2024, Elise Marks has embarked on a new journey as a blogger, focusing on personal product analysis and first-hand usage reviews. Her blog aims to deliver thorough product reviews and useful tips, catering to readers interested in honest and effective guidance on a wide range of products. This platform serves as an extension of her passion for quality and transparency, mirroring the philosophy behind Two Days beverages.
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