June 30, 2025

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Transmission Additives of 2025

Save up to 22% off

Best Choice

1

Smilyeez
Smilyeez Listing for BG Automatic Transmission Conditioner Protectant - Automatic Transmission Additive ATC PN 310 (2 Pack)
Main highlights

Prolongs Transmission Life
BG ATC Plus improves fluid oxidation stability, thereby prolonging fluid life and the life of the transmission.

Ideal for Preventing Leaks
BG ATC Plus prevents leaks by conditioning hardened seals, keeping them soft and pliable.

Highly Effective in Vehicles
Does a great job in vehicles, as described, works great.
9.8

Exceptional

Our Rating

9.3
lasts a long time

8.9
worth the money

8.9
quality of ingredients
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

Lubegard
DR TRANNY LUBEGARD AUTOMATIC TRANSMISSION INSTANT SHUDDER FIX 6 PACK
Main highlights

Instant Shudder Elimination
Formulated to instantly eliminate torque converter lock-up shudder, providing smoother shifts.

Versatile Use Cases
Ideal for any automatic transmission fluid except Ford Type F or CVT.

Highly Praised Performance
Customers acclaim its ability to fix transmission judder effectively.
Key specs
- performance:Eliminates torque converter shudder
- application:Automatic transmission fluid
- specific uses:Transmission fluid additive
- liquid volume:8 ounces
- material:N/A
9.6

Exceptional

Our Rating

9.9
worth the money

9.7
Simple to use

9.3
lasts a long time
3

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

22% 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.
Key specs
- Stability:Smooths out gear changes
- Liquid Volume:16 Fluid Ounces
- Performance:Reduces operating temperatures
- Protection:Minimizes metal contact
- Temperature:Reduces operating temperatures
9.5

Excellent

Our Rating

9.7
Temperature control

9.3
Simple to use

9.1
worth the money
4

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.
Key specs
- performance:Increases reliability
- application:Transmission
- specific uses:Increase Efficiency
- liquid volume:0.27
- material:Ceramic
9.4

Excellent

Our Rating

9.5
Simple to use

8.7
worth the money

8.7
distance
5

Sea Foam
Sea Foam Trans Tune Fluid System Treatment, TT16, 16 oz
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.
9.3

Excellent

Our Rating

9.9
Simple to use

9.9
sweat control

9.7
worth the money
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6

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.
9.0

Excellent

Our Rating

9.9
Noise level

9.3
worth the money

9.3
lasts a long time
7

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.
8.9

Very Good

Our Rating

9.9
Simple to use

9.5
worth the money

9.1
distance
8

XADO
XADO AMC Automatic Transmission Additive Hard Shifting Instant Shudder Fixx - Atomic Metal Conditioner Maximum Slip Fix (Syringe 30ml)
Main highlights

Restores_and_Protects
Restores surfaces and protects friction metal parts from wear, enhancing reliability and longevity.

Ideal_for_Automatic_Transmissions
Perfect for automatic transmissions needing smoother shifts and reduced noise.

Praised_Shift_Smoothness
Customers praise its ability to eliminate transmission shudder and improve shifting smoothness.
8.7

Very Good

Our Rating

8.0
worth the money

8.0
distance
9

zMAX
zMAX 51-306 - Transmission Formula - for Automatic and Manual Transmissions - Reduces Carbon Build-Up - Lubricates Metal and Gears - Keeps Seals Supple - Improves Shifting Performance - 6 oz.
Main highlights

Key Features and Benefits
Enhances transmission efficiency, reduces gear wear, and improves shifting by micro-lubrication. Eco-friendly and maintains seals to prevent leaks.

Ideal Use Cases
Perfect for automatic or manual transmissions (except CVT), especially during fluid changes to maintain smooth, efficient operation and extend vehicle life.

Customer Reviews Highlight
Most praised for significantly smoother shifting and noticeable improvement in transmission performance, with many users highlighting its preventive maintenance benefits.
8.6

Very Good

Our Rating

9.5
worth the money

9.3
distance
10

Valvoline
Valvoline MaxLife Multi-Vehicle ATF Full Synthetic Automatic Transmission Fluid 1 GA

17% Off
Main highlights

High Performance Conditioning
Prolongs seal elasticity and prevents leaks with conditioning agents.

Ideal for ATF Vehicles
Compatible with 95% of ATF vehicles, including most CVTs.

Smooth Shifting Experience
Customers praise its ability to enhance smooth gear shifting.
8.4

Good

Our Rating

9.9
Sheerness

9.7
worth the money

9.5
Long life

Transmission Additives of 2025

1

Smilyeez Listing for BG Automatic Transmission Conditioner Protectant - Automatic Transmission Additive ATC PN 310 (2 Pack)

9.3

8.9

8.9

How do we rank?

How do we rank?

Analyzing top stores

2

DR TRANNY LUBEGARD AUTOMATIC TRANSMISSION INSTANT SHUDDER FIX 6 PACK

9.9

9.7

9.3

3

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

9.7

9.3

9.1

4

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

5

Sea Foam Trans Tune Fluid System Treatment, TT16, 16 oz

9.9

9.9

9.7

6

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

9.9

9.3

9.3

7

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

9.9

9.5

9.1

8

XADO AMC Automatic Transmission Additive Hard Shifting Instant Shudder Fixx - Atomic Metal Conditioner Maximum Slip Fix (Syringe 30ml)

8.0

8.0

9

zMAX 51-306 - Transmission Formula - for Automatic and Manual Transmissions - Reduces Carbon Build-Up - Lubricates Metal and Gears - Keeps Seals Supple - Improves Shifting Performance - 6 oz.

9.5

9.3

10

Valvoline MaxLife Multi-Vehicle ATF Full Synthetic Automatic Transmission Fluid 1 GA

9.9

9.7

9.5

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