Best Transmission Additive Reviews

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Whether you’re new to car ownership or just testing the waters, finding the best transmission additive isn’t always an easy sail. On one hand, you’ll need an in-depth understanding of how each additive affects your car functioning — do the positives outweigh the negatives or vice versa?

In general, an automatic transmission additive can minimize very commonly occurring tiny transmission spills. Because leaks render the transmission system inefficient, and cracks can contribute to significant issues in the multiple sections, an additive is required to handle the transmission fluid.

Since I’ve tried a couple of them, and rounded up credible information from a few other transmission additive reviews, I’ll give you some take-homes of the best transmission additive, their key features as well as their pros/cons.

Transmission Additives Reviews

LUCAS LUC10009 24

LUCAS LUC10009 24
This transmission additive is highly recommended for its great results. Some reasons why it comes up frequently as the best additive for slipping transmission are the following: Lucas extends the lives of cables and ensures that you ride without issues.

Furthermore, it does not have solvents and does not damage the steel layer. This means it is the best possible transmission additive for sticking valves. The formulation shapes into a polymeric film, renewing worn bonds to prevent the transmission from slipping. This also decreases the working temperature and controls foaming effectively.

Without draining it, you can readily add this to your fluid. In addition, the item takes charge of tear and makes certain that no rough shift is taking place. This additive also has the value of stopping errors and extending the lifespan of transmission. It is available in a 24 oz volume and is a fast engine fix.

Another point is that it can be applied to create gear modifications, making it slightly more clean and easy on light-duty manual transmission. However, it is not to be used for CVT devices. I think it is cost-effective, particularly if it’s spared you a restore order of over 1000 bucks. All in all, for its excellent equilibrium between cost and efficiency, Lucas Transmission is a highly regarded engine additive.


  • Affordable.
  • No solvents.
  • Removes slippage.


  • The bottle cap is difficult to close.
  • Could go out of stock due to very high demand.
  • It’s more available in certain countries as opposed to the others.

Prolong Super Lubricants PSL15000

Prolong Super Lubricants PSL15000
With anti-metal therapy technology, this transmission additive is very appropriate for metallic skin therapy. This is perfect for improving transmission responsiveness and also encourages easy automatic changes. In addition, this has molecules that interact with metal substrates in the production of a safety coating and create a chemical link. The item also reduces harmful friction and temperature. This handles both electric vehicles and steel substrates with its chemical method.

In addition, this output is supreme and offers no inferior security. The item is sealed in a volume of 8 oz formulated with sophisticated technology. This functioning is very good when the gear oil circulates and decreases the likelihood of heat and friction harm. This can also be used in severe circumstances of stress and provides excellent security. This is cost-effective rather than opt for more costly maintenance. Even during critical acceleration circumstances, it restores the reaction in the transmission. It is obviously the best transmission additive for hard shifting.

In total, it can be used for both manual and automatic transmissions and makes it a very good all-rounder. The formula for Prolong Super Lubricants purifies, lubricates, and offers excellent security.


  • Automatic as well as manual engines can be fixed.
  • Protecting coating decreases temperature and vibration.
  • Comes in a multi-use 8-ounce jar.


  • Not for malfunctioning or defective drives.
  • It’s more expensive than a few additives like the LUCAS LUC10009 24.

Hot Shot’s Secret HSSTSE32Z

Hot Shot’s Secret HSSTSE32Z
The Hot Shot’s Secret Transmission Stiction Eliminator will probably be of interest if you use a diesel-based engine and can not actually wrap your head around an appropriate transmission addition. It can be used with instant engines of both petrol transmissions and those that depend on gas.

Specially designed for automatic transmission, including CVT, the Hot Shot’s Secret HSSTSE32Z is a high-performing transmission additive. It is ideal for reducing temperature transmission treatment, and drawing traces in covered surfaces alike.

The fluid additive removes liquid and decreases working conditions such as temperature. It at the same time eliminates sticking from all manual engines, decreases friction coefficients, and decreases touch between metal and metal. The fluids supplement also eliminates rust and corrosion, and the transmission of the Hot Shot’s Secret Transmission Stiction will clean out transmission modifications.

Beyond that, the ester-based components make it high-performing and conform distinctive characteristics that ‘pull particles’ from the covered regions together. If you want to soothe the transition, generate a smoother journey, and safeguard the drive, then you can look out for it. I’d define this as the best transmission fluid.


  • Ideal for automatic transmission cars with gas and diesel engines.
  • Provides rapid performance.
  • Reduces tear and friction.


  • No manual transmission schemes are developed.
  • Compared to other additives in its spectrum, it is costly.
  • Works only with automated systems.

Liqui Moly 20040 ATF Additive

Liqui Moly 20040 ATF Additive
In addition to placing the engine in line, Liqui Moly ATF Additive could also assist you enhance your vehicle’s steering system. This ingredient could be a great option for you if you have some problems with both engine and battery. Then again, this additive is designed to regenerate and purify the sticks in power steering and transmission structures, dampen the switching as well as protect the parts.

In contrast to the additives that I’ve already checked out, Liqui Moly ATF Additive is a gel rather than fluid. This allows it simpler to use this item because no mixing problem is created.

What’s more, in order to regenerate oil seals and ensure optimal treatment in any rubber seal that assist in oil losses, this brand has been developed. The transmission and parts are also cleaned and protected, which helps dampen the acoustics and create the changes so smoother. It enables to enhance the general look of the electric cabinet when used in an energy wheel scheme, rendering riding that slightly more convenient and secure. In any type of automatic transmission, this item operates, raising its bars to the best transmission fluid additive.


  • Improves power control and transmission.
  • Adequate for noise reduction.
  • Adds an extra layer of protection to the transmission.


  • Not manually transmissible.
  • It does not extract waste or pollutants.
  • Burns out quickly.

Lubegard 19610 Dr. Tranny Instant Shudder Fixx

Lubegard 19610 Dr. Tranny Instant Shudder Fixx
The Lubegard equally serves as the best type of transmission fluid additive. In case you want to ensure that your transmission is not overheated and optimized, then this additive is can come handy. It is available in different dimensions and reduces the operating temperature. Lubegard 19610 eliminates your transmission’s liquid foaming and changes the difficult changes in no moment. It is very efficient to soften the changes without causing decomposition. This further increases the fluid’s capacity to transfer heat and also protects the seals. The result is continuous in maintaining the existing seals and no adverse effects will occur. In fact, it likewise improves the fluid’s performance as it stabilizes. All shifting issues are fixed and the transmission is protected. The focused ingredient improves your transmitting efficiency and does not respond or dry out with air. This has anti-chatter, and anti-shudder (must be permitted to stay overnight for better penetration).

Particularly, it was intended for instant fixation, although it is recognized to carry 10-15 miles in very severe instances before it is established. In essence, its word of mouth inform us that it is a “traction modifier” focused on reducing the force sensed when the converter opens up. It also has the advantage of four times lower friction than ordinary fluid, but requires to be used instead of as a stand-alone additive, so that is not truly applicable.


  • Specifically developed for shudder.
  • Wear reduction up to 4 times.
  • Great for long term transmission servicing.


  • Not compatible with manual transmission.
  • In the pack, just 2 ounces of the additive is available.
  • Constant need for a refill make it relatively pricey.

Sea Foam 16 Ounce TT-16 Trans Tune Transmission Additive

Sea Foam 16 Ounce TT-16 Trans Tune Transmission Additive
In an attempt to decrease distortion and transmission fatigue, the item is targeted at magnetically binding the steel parts of the pipeline. It should improve your shifting almost immediately, especially when you don’t have a lot of time.

For almost all high-pressure systems, Sea Foam Trans Tune offers a helpful all-round refresher. In order to prevent moisture and seal harm in motor energy, hydraulics and manufacturing equipment, it is ideal in relation to other apparent additives.

The Sea Foam 16 Ounce TT-16 is also made to operate with hydraulic and electric steering systems, so that your vehicle can handle other issues. Sadly, manual gearbox car owners won’t be prepared to do so.

If you have surplus moisture a problem, the trans-tune transmission additive might be a useful choice because it is moisture-proof. Besides, it is designed to decrease harsh or hard changes without altering the viscosity of the fluid in your car.


  • Usable in hydraulic steering and power transmissions.
  • The viscosity of the transmission fluid is constant.
  • Regulates the engine’s moisture.


  • Designed for only automatic systems.
  • Can be toxic to handle, so you need to be very careful.
  • The effectivity span is short.

Honda Transmission Fluid ATF DW-1

Honda Transmission Fluid ATF DW-1
This model substitutes the ATF-Z1 and is mixable with the Z1. It among the transmission additives that work for Honda car models. However, you must be cautious while using it in order not to accidentally add more particles to your Honda transmission. To guarantee lengthy service and adequate transmission, the ATF-DW-1 merges with the products in your transmission to provide an appropriate combination of lubrication and friction.

Every pair of modifications in the oil will keep the fluid smooth with easy flow. Although a drain and fill does not remove the whole ATF-DW-1, it will always swap the old for new if done regularly.


  • Complies with the norms of performance of Honda.
  • Smoother change at elevated and small altitudes.
  • Protects unique components from screens and “O” rings.


  • It is not economical.
  • Not recommended for long service because it requires frequent refills over short periods.
  • Needs regular refill, so overtime could become pricey.

Buyer’s Guide

Steps to Fix Automatic Transmission Slippage

Learn these 3 simple practices on how to fix hard shifting automatic transmission.

STEP ONE: Begin with the easiest solution

Check first the amount of the transmission fluid. Low liquid can avoid correctly moving the transmission. It is essential that fluid level is low and that any issues are fixed. A leaky lock or other mechanical flaw could be involved. If not, it won’t solve the problem by adding new fluids.

STEP TWO: Make sure your transmission fluid isn’t worn out

A liquid that has grown and lost some of its frictional characteristics may also contribute to bad value shifting. For example, frictional characteristics of the fluid serve a key part in maintaining the proper bonding of the fastening sheets and seamless equipment changes. The friction of the fluid may degrade over time, resulting in long, jerky or incompatible changes. It’s crucial to renew your transmission fluid in this situation.

How are you convinced that the fluid is still good? A fluid assessment is the only clear route to figure out. Fluid that tastes or seems filthy, however, is likely to be caused by a shift. Changing the fluid is good exercise before the frictional features are exhausted. Bad changes occur because only when such conditions changes grow worse and contribute to greater problems that need mechanical repair.

STEP THREE: Know if the transmission is appropriate

In simple terms, you should avoid adaptive transmission. If you dig deeper into changes, then an exciting notice is the use of modern, flexible cars. These devices make your riding practices and liquid features to adapt to changes appropriately. The device compensates the transmission efficiency because the fluid reduces unwanted rubbing together of the parts. The machine may still work as if a worn-out fluid is used when you have altered your fluid lately, resulting in bad additive performance. In those cases, drive continuously and your car will eventually adjust accordingly your driving habits and the behavior of the new fluid.

Explaining What Transmission Slipping Means

What is transmission slipping?

A loose cable is an indication of the need for delivery or a fix of your automated transmission. It is essential that we point out, however. When the buttons are sliding, it does not always imply that your transmission is missing. You can hear the motor revolving, but the car doesn’t track. Sometimes, when you have a heavy freight and go up a mountain, this can occur.

If you constantly hear or feel an antagonism, this may also be linked to the slippage and it definitely means that you must get your transmissions inspected. You can come down and see this very readily if you have a tachometer gage in the box. If the car isn’t going to respond to the equipment, you will have to fire the engine more actively.

Other signs of loose gear may include delays in the acceleration, the failure to turn the vehicle, trouble moving into distinct wheels (maybe a small or fast velocity), weird sounds, any cooked odor or other extraordinary odor, etc.

How does Renewing Transmission Fluid Help?

First, a spill may seem like a minor problem, but its consequences may be serious. A tiny spill could lead to a poor operation of your transmission system. Corrosive automatic transmission additives can be very aggressive, so having tiny holes could harm components in near proximity. You can minimize leaks by spending on a healthy fuel additive.

Secondly, since even high-grade liquids start shrinking and thicken after comprehensive use. When contaminants and the fluid forming buckthorn blend with wind and other contaminants, the thick liquid moves gently, thus stopping easy and efficient movement of the motor components. Proper transmission therapy maintains your ATF viscosity, assisting your transmission to function as it should.

When the transmission works easier because of low fluid, you will not only experience the impact of enhanced maintenance, but also of the noise it produces. You realize your transmitter is clacking, whirling, and producing other sounds. This reduces the performance of your journey considerably. The addition of a nice engine component helps to decrease your car friction and noise.