July 1, 2025

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10 Best transmission additives of 2025

Save up to 27% off

Best Choice

1

Hot Shot's Secret
Hot Shot's Secret Shift Restore Automatic Transmission Additive 16 fl oz Bottle

26% Off
Main highlights

Enhanced Transmission Performance
Reduces operating temperatures and friction, ensuring smoother gear changes and improved transmission efficiency.

Ideal for Automatic Transmissions
Perfect for vehicles with automatic or CVT transmissions needing smoother shifts and reduced wear.

Customer-Praised Smoothness
Highly rated for its ability to smooth out gear changes and minimize metal contact.
9.8

Exceptional

Our Rating

9.7
Temperature control

9.3
Simple to use

9.1
worth the money
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

XADO
XADO EX120 Automatic Transmission Fix - Treatment for CVT & Other Gearbox Types | ATF Additive & Protectant - Reduces Sticking, Shudder and Slipping
Main highlights

Key Features and Benefits
Rebuilds and protects metal parts, reduces shudder and slipping.

Ideal Use Scenarios
Perfect for CVT and automatic transmissions with performance issues.

Praised Customer Feature
Immediate improvement in shifting and noise reduction.
9.7

Exceptional

Our Rating

9.5
Simple to use

8.7
worth the money

8.7
Noise level
3

Lucas Oil
Lucas Oil 10009 Transmission Fix - 24 Ounce, White
Main highlights

Extends Fluid Life
Reduces the need for frequent fluid changes, extending fluid life up to 4 times longer.

Ideal for Motor Homes
A must for motor homes and commercial vehicles due to its protective qualities.

Improves Shift Quality
Customers praise the significant improvement in shift quality and transmission performance.
9.5

Excellent

Our Rating

9.3
Simple to use

9.1
worth the money

9.1
distance
4

Lubegard
Lubegard 19610 Instant Shudder Fix
Main highlights

Instant Shudder Elimination
Lubegard 19610 instantly eliminates torque converter shudder for smoother rides.

Ideal for Quick Fixes
Perfect for temporary relief of transmission shudder issues.

Praised for Immediate Effectiveness
Customers appreciate its immediate impact on transmission performance.
9.3

Excellent

Our Rating

9.5
worth the money

9.3
distance
5

Lubegard
Lubegard 60902 Automatic Transmission Fluid Protectant, 10 oz

22% Off
Main highlights

Optimizes Transmission Performance
Reduces wear and prevents overheating for better transmission efficiency.

Ideal for High Mileage Vehicles
Perfect for vehicles with high mileage to maintain smooth operation.

Improves Shift Quality
Commonly praised for making shifts smoother and quicker.
9.2

Excellent

Our Rating

9.3
worth the money

9.3
distance
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6

Lubegard
Lubegard 19610 Dr. Tranny Instant Shudder Fixx 2 Ounce 2 Pack
Main highlights

Instant_Shudder_Elimination
Concentrated friction modifier eliminates torque converter lock-up shudder instantly, reducing wear significantly.

Versatile_Application
Ideal for any automatic transmission fluid except Ford Type F and CVT applications.

Praised_For_Effectiveness
Customers frequently praise its immediate impact on reducing transmission shudder.
9.1

Excellent

Our Rating

9.9
Simple to use

9.5
worth the money

9.1
distance
7

Lucas Oil
Lucas Oil 10441 Automatic Transmission Fluid Conditioner - 20 Ounce
Main highlights

Improves Shifting and Fluid Life
Lucas Oil 10441 enhances shifting performance and prolongs fluid life, ensuring smoother and more reliable transmission operation.

Ideal for High Mileage Vehicles
Perfect for vehicles with over 150,000 miles, like Honda CRVs, enhancing transmission longevity and performance.

Trusted Brand with High Ratings
Customers praise Lucas Oil's reliability, with a 4.7-star rating, highlighting its effectiveness in reducing noise and shudder.
8.8

Very Good

Our Rating

9.5
worth the money

9.3
distance
8

Lubegard
Lubegard 63010 Platinum Automatic Transmission Fluid Protectant, 10 oz.

27% Off
Main highlights

Universal ATF Protectant
Eliminates ATF confusion, reduces friction, and extends fluid life.

Ideal for Smoother Shifts
Perfect for resolving transmission shudder and enhancing shift quality.

Customer Praised for Shudder Elimination
Highly effective in eliminating transmission shudder and improving performance.
8.7

Very Good

Our Rating

9.9
distance

9.3
worth the money
9

Sea Foam
Sea Foam Trans Tune TT16, 16 oz , White
Main highlights

Cleans and Lubricates
Cleans and lubricates valve bodies, shift actuators, and solenoids for smoother operation.

Ideal for Transmission Maintenance
Perfect for maintaining and restoring performance in automatic transmission systems.

Praised for Performance Improvement
Customers report significant improvements in transmission performance and fuel efficiency.
8.6

Very Good

Our Rating

9.9
Simple to use

9.9
sweat control

9.7
worth the money
10

Liqui Moly
LIQUI MOLY ATF Additive | 250 ml | Oil additive | SKU: 5135
Main highlights

Prevents Oil Loss and Protects
The additive prevents oil loss, protects seals, and reduces wear.

Ideal for Early Transmission Issues
Best used at the first signs of transmission problems for optimal results.

Smooth Shifting Praised by Users
Customers frequently praise its ability to make gear shifts smoother.
8.3

Good

Our Rating

9.9
Noise level

9.3
worth the money

9.3
lasts a long time

10 Best transmission additives of 2025

1

Hot Shot's Secret Shift Restore Automatic Transmission Additive 16 fl oz Bottle

9.7

9.3

9.1

How do we rank?

How do we rank?

Analyzing top stores

2

XADO EX120 Automatic Transmission Fix - Treatment for CVT & Other Gearbox Types | ATF Additive & Protectant - Reduces Sticking, Shudder and Slipping

9.5

8.7

8.7

3

Lucas Oil 10009 Transmission Fix - 24 Ounce, White

9.3

9.1

9.1

4

Lubegard 19610 Instant Shudder Fix

9.5

9.3

5

Lubegard 60902 Automatic Transmission Fluid Protectant, 10 oz

9.3

9.3

6

Lubegard 19610 Dr. Tranny Instant Shudder Fixx 2 Ounce 2 Pack

9.9

9.5

9.1

7

Lucas Oil 10441 Automatic Transmission Fluid Conditioner - 20 Ounce

9.5

9.3

8

Lubegard 63010 Platinum Automatic Transmission Fluid Protectant, 10 oz.

9.9

9.3

9

Sea Foam Trans Tune TT16, 16 oz , White

9.9

9.9

9.7

10

LIQUI MOLY ATF Additive | 250 ml | Oil additive | SKU: 5135

9.9

9.3

9.3

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