It is important to have the best auto trans additive. We are here to help you pick the best one for your needs from all the best available products in market today.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Sea Foam Auto Trans Additive READ REVIEW

Best For Steering Gears: Buy: Liqui Moly Auto Trans Additive READ REVIEW

Best With Smooth Shifts: Buy: Prolong Super Lubricants Auto Trans Additive READ REVIEW

Best For Hondas: Buy: Zmax Auto Trans Additive READ REVIEW

Best For Minimal Investment: Buy: Lubegard Auto Trans Additive READ REVIEW

Best For High Performance: Buy: Hot Shots Secret Auto Trans Additive READ REVIEW

Best For Smoother Shifts: Buy: Xado Auto Trans Additive READ REVIEW

Best For Short Description: Buy: Atp Auto Trans Additive READ REVIEW

Best For All Uses: Buy: Cerma Auto Trans Additive READ REVIEW

Best Overall: Sea Foam Auto Trans Additive

Buy on Amazon

Sea Foam offers a variety of additives for personal choice and yet maintains quality in all the variants. The Sea Foam Auto Trans Additive is designed for smoother shifts and it controls moisture. To keep safe in most types of automatic transmission fluid, hydraulics, or power steering fluid systems. Also, it works as stated, is much more and it is compatible with mercon v.

The additive has to traffic and it is added into a bottle. Above all, the sea foam auto trans additive is suitable for low speeds and it is safe for conventional.

Most customers found that the additive is worth every penny and then some. Further, they say that the additive is routine maintenance on a well - performing transmission. Consequently, buyers were very happy to recommend it to friends and families.

• This clean shift sokenoids good, plus it is great for power steering.
• These are blocks preventing the oil from circulating and cooling.
• Cleans and lubricates valve bodies, shift actuators and solenoids, controls moisture.
• This is worth a try before junking the car.

Best For Steering Gears: Liqui Moly Auto Trans Additive

Buy on Amazon

The Liqui Moly Auto Trans Additive has killer features for the price point. The liqui moly auto trans additive reduced the noise and it is much more. Make sure this fits by entering your model number. And, this is designed for smoother shifts and it made for a huge difference.

Lastly, the liqui moly auto trans additive comes protects from wear and it runs like new.

Most customers quickly discovered that the additive is compatible with all auto trans for gasoline and diesel vehicles. Moreover, a few strongly agree that the additive is suitable for steering gears and automatic transmissions that are filled with atf ii and atf iii oils. In short, at the price, they believe that they got a steal of a deal with it.

• This works with (red) atf iii.
• This has always been a good running car. Now it is better.
• This has made a positive difference.
• This is a different system than cars that use atf in the power steering unit.

Best With Smooth Shifts: Prolong Super Lubricants Auto Trans Additive

Buy on Amazon

The best part: Prolong Super Lubricants Auto Trans Additive costs comparatively low and it is available to ship in 24 hours. The prolong super lubricants auto trans additive offers molecules that interact with metal surfaces and chemically bond to create a protective layer that reduces damaging friction and heat. Make sure this fits by entering your model number. Also, it is great with smooth shifts and it allows for high speeds.

The additive has for many other lubricants and it is compatible with Mercon v. Also, the additive features a formula that promotes smoother manual shifts and helps restore responsiveness in automatic transmissions. Above all, the prolong super lubricants auto trans additive includes a formula with anti-friction metal treatment technology.

Almost all buyers found that the additive will last but so far so good. Further, they also found that the additive does work to improve transmission shifting. Moreover, a few say that the fluid change helped, but this really smoothed out bits of bind on high acceleration or towing. Overall, many customers have used the prolong super lubricants auto trans additive for more than a few months without any complaints, and it shows no sign of giving up.

• This is designed for smoother shifts and it is unbeatable.
• This provides different friction characteristics than dexron iii/mercon.
• This is one of the most common fluids on the market.
• Features engineering designed to treat metal surfaces through a molecular and chemical process.

Best For Hondas: Zmax Auto Trans Additive

Buy on Amazon

We would, of course, be remiss if we didn't mention Zmax Auto Trans Additive for regular usage. The zmax auto trans additive works so far and it made a huge difference. Trusted for over 80 years, the USA made transmission formula saves money at the pump and extends the engine life of all your vehicles. In addition, the additive has 215k miles and it is added to a bottle.

Lastly, the zmax auto transadditive is proud to be the official micro-lubricant of speedway motorsports.

Almost all customers opine that the additive is the best trans fix for hondas. And, they say that the additives can make the car shift better. In addition, a few also found that the additive can be used with all automatic and manual trans and fluids.

• This improves the performance and the driving experience.
• This is already shifting snoother and makes changing the gears so smooth.
• This cleans varnish for smoother shifting and lubricates bearings, gears, and the hydraulic system.
• The additive does not negate the need for normal fluid and filter changes.

Best For Minimal Investment: Lubegard Auto Trans Additive

Buy on Amazon

Lubegard offers a variety of additives for personal choice and yet maintains quality in all the variants. The Lubegard Auto Trans Additive is compatible with all conventional or synthetic automatic transmission fluids. Voted top product by transmission professionals. In addition, this works as stated and it is great for minimal investment.

The additive can be used by more professional transmission technicians. And, it is for the best overall performance and long - term transmission benefit. Lastly, the lubegard autotrans additive provides four times less wear than regular atf.

Almost all customers found that the additive has been about a month now since it was added. In addition, a few say that the additive is like a hesitation and even a slight shake at random times that become more frequent. And, they strongly agree that the additive is shuddering, from the torque converter clutch, should work, most notable after shifting into the latest high gear. In conclusion, most buyers call the additive functionally comfort, and no one questions it.

• This will work in any transmission with a shuddering feeling.
• This is made to fix the shudder in your transmission.
• This does ...this stuff is gold.
• This will work on a 2005 f150 5.4 automatic transmission.

Best For High Performance: Hot Shots Secret Auto Trans Additive

Buy on Amazon

The Hot Shots Secret Auto Trans Additive should be able to handle its purpose and duties with ease. The hot shots secret auto trans additive has go traffic, is designed for smoother shifts and it added a bottle. The Manufacturer says: Our shift restore formula acts as a high-quality transmission lubricant that serves as a hydraulic fluid, lubricating fluid and heat transfer fluid. And, it is erratic and it is designed for top notch performance.

Finally, the hot shots secret auto trans additive reduces transmission operating temperatures with high performance ester formula.

Almost all buyers opine that the additive does replace an equal amount of atf, so we highly recommend a flush/fluid change. In addition, they also found that the additive is designed to help with smoothing shifts by removing sticky burnt oil and restoration your transmission to a new like condition. Overall, many customers have used the hot shots secret auto trans additive for more than a few months without any problems, and it shows no sign of giving up.

• This will help with valve body issues or solenoid activity.
• This will work overtime to clean them and reduce sticking.
• This is absolutely safe & effective for your specific transmission, thanks.
• This will not restore worn clutch material.

Best For Smoother Shifts: Xado Auto Trans Additive

Buy on Amazon

The features department is where Xado Auto Trans Additive truly manages to shine. The xado auto transadditive is great with smooth shifts and it reduces noise. Make sure this fits by entering your model number. Moreover, the additive has go traffic and it is universal for automatic.

The additive is designed for smoother shifts and it is good for low speeds. Above all, the xado autotrans additive is convenient to use and it works like a miracle.

Most customers quickly discovered that the additive will shudder and shake and then will be fine once moving. And, they say that the additive has been relatively well cared for. Also, a few strongly agree that the sound reduction is the anti friction material, helps whatever is rubbing not rub so much.

• This comes out as a paste like substance and not a liquid.
• This can work with any hydraulic equipment in any unit.
• This is a really good question actually.
• This can be used in conjunction with Lubegard 19610 dr. Tranny instant shudder fixx.

Best For Short Description: Atp Auto Trans Additive

Buy on Amazon

The Atp Auto Trans Additive's superior materials make sure that it ages well with use. The atp auto trans additive lasts several years and it is perfect for short description. Make sure this fits by entering your model number. This highly concentrated synthetic friction modifier is designed to stop torque converter shudder. Above all, the atp auto trans additive.

Almost all customers quickly discovered that the additive can be used in ford automatic transmissions. In addition, a few say that the additive is not compatible with the type of automatic transmission fluid in general motor vehicles.

• Package dimensions :14.986 cm l x18.034 cm w x11.684 cm h.
• Short description : trans fluid additive.
• Good brand reputation.

Best For All Uses: Cerma Auto Trans Additive

Buy on Amazon

Next on the list, we've got yet another additive that manages to win our hearts. It's the Cerma Auto Trans Additive and it's widely considered as one of the most convenient additives you can buy. The cerma auto trans additive restores performance and fixes many transmission issues. Excellent for preventative maintenance and extends fluid life by up to four times. Further, this is designed for smoother shifts and it makes it much quieter. Above all, the cerma auto trans additive is ideal for all uses, including cars, diesel truck, motor homes and commercial vehicles.

Almost all buyers quickly discovered that the additive protects every metal surface being lubricated. Further, they strongly agree that the additive has a gearbox additive that costs less than $15 and their engine oil additive really quietens cattery diesel engines. Also, a few strongly agree that the additive does not mix with any oil and it in fact causes no seal degradation.

• This has a duel - clutch transmission.
• This is absolutely smooth and quiet, over 240, 000 miles.
• This restores performance and fixes many transmission issues.
• Eliminates most seal leaks and lowers operating temperatures in hard-working units.