August 3, 2025

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Transmission Additives of 2025

Save up to 28% off

Best Choice

1

Prolong Super Lubricants
Prolong Super Lubricants PSL15000 Transmission Treatment, 8 oz
Main highlights

Anti-Friction Technology Benefits
Features a formula that reduces friction, heat, and wear, enhancing transmission performance.

Ideal for Transmission Improvement
Perfect for both manual and automatic transmissions to restore smoothness and responsiveness.

Praised for Smoothing Shifts
Customers love its ability to significantly improve shift smoothness and responsiveness.
Key specs
- performance:Reduces Friction and Heat
- application:Standard and Automatic Transmissions
- specific uses:Transmission Fluid Additive
- liquid volume:8 ounces
- material:Anti-Friction Metal Treatment
9.8

Exceptional

Our Rating

8.4
worth the money

8.4
distance

8.0
Long life
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

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

24% 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
- Compatibility:All automatic & CVT
9.7

Exceptional

Our Rating

9.7
Temperature control

9.3
Simple to use

9.1
worth the money
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 63010 Platinum Automatic Transmission Fluid Protectant, 10 oz.

28% 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.
9.4

Excellent

Our Rating

9.9
distance

9.3
worth the money
5

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
9.3

Excellent

Our Rating

9.5
Simple to use

8.7
worth the money

8.7
distance
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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

BG(0002698761)
BG ATC Plus
Main highlights

Enhances Transmission Fluid
BG ATC Plus boosts fluid oxidation stability, prolonging transmission life.

Ideal for High-Mileage Vehicles
Perfect for vehicles with over 100,000 miles needing smoother shifts.

Praised for Smoother Shifting
Customers love its ability to smoothen gear shifts and reduce shudder.
Key specs
- Stability:Improves fluid oxidation
- Liquid Volume:11.2 ounces
- Performance:Enhances transmission fluid
- Protection:Prevents leaks
- Compatibility:Automatic transmission fluid
8.8

Very Good

Our Rating

9.1
worth the money

8.9
distance

8.0
Simple to use
9

Ford
Ford Genuine XL-3 Friction Modifier Additive - 4 oz.
Main highlights

Reduces Gear Noise and Chatter
Formulated for automotive use, this additive reduces chatter and hypoid gear noise levels in limited-slip differentials when used according to owner guide recommendations.

Ideal for Differential Fluid Changes
Perfect for those performing differential fluid changes, especially in Ford vehicles, to ensure the limited-slip functionality is maintained with both regular and synthetic gear oils.

Immediate Performance Improvement
Customers frequently praise the product for its immediate effectiveness in eliminating noise and improving smoothness in differentials, despite its strong odor.
8.7

Very Good

Our Rating

9.9
Easy installation

9.7
worth the money

9.7
Noise level
10

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

Transmission Additives of 2025

1

Prolong Super Lubricants PSL15000 Transmission Treatment, 8 oz

8.4

8.4

8.0

How do we rank?

How do we rank?

Analyzing top stores

2

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

9.7

9.3

9.1

3

Lucas Oil 10009 Transmission Fix - 24 Ounce, White

9.3

9.1

9.1

4

Lubegard 63010 Platinum Automatic Transmission Fluid Protectant, 10 oz.

9.9

9.3

5

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

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

BG ATC Plus

9.1

8.9

8.0

9

Ford Genuine XL-3 Friction Modifier Additive - 4 oz.

9.9

9.7

9.7

10

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

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