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Best Transmission Additives

From leading brands and best sellers available on the web.
#1

Winner

Lucas Oil 10009 Transmission Fix -

Lucas Oil

Lucas Oil 10009 Transmission Fix - 24 Ounce, White

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#2
Hot Shot's Secret Shift Restore Aut

Hot Shot's Secret

27%OFF

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

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#3
Automatic Transmission Fluid ATF (6

Liqui Moly

8%OFF

Automatic Transmission Fluid ATF (6 Liters) LIQUI MOLY MADE IN GERMANY for BMW

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#4
Bar's Leaks Rear Main Seal Repair,

Bar's Leaks

Bar's Leaks Rear Main Seal Repair, 16.9 oz

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#5
Bar's Leaks High Mileage Transmissi

Bar's Leaks

8%OFF

Bar's Leaks High Mileage Transmission Repair-It, 16.9 Fl Oz

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#6
XADO EX120 Automatic Transmission F

XADO

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

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#7
Bar's Leaks 1334-5PK One Seal Stop

Bar's Leaks

Bar's Leaks 1334-5PK One Seal Stop Leak - 11 oz, (Pack of 5)

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#8
Bar's Leaks 1414 CVT Transmission F

Bar's Leaks

9%OFF

Bar's Leaks 1414 CVT Transmission Fix - 11 oz.

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#9
Royal Purple 01512 Set of 4 Synchro

Royal Purple

5%OFF

Royal Purple 01512 Set of 4 Synchromax Manual Transmission Fluid 1-Quart Bottles

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#10
zMAX Transmission Formula 2 Pk - Au

zMAX

zMAX Transmission Formula 2 Pk - Automatic and Manual Transmission Fluid Additive to Lubricate Metal and Gears - Improves Shifting Performance - 6oz

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Buying Guide for the Best Transmission Additives

Transmission additives are products designed to improve the performance and longevity of your vehicle's transmission system. They can help reduce wear, prevent leaks, and improve shifting performance. When choosing a transmission additive, it's important to understand the specific needs of your vehicle and how different additives can address those needs. Here are some key specifications to consider when selecting a transmission additive.
CompatibilityCompatibility refers to whether the transmission additive is suitable for your vehicle's transmission type, such as automatic or manual. This is important because using an incompatible additive can cause damage to your transmission. To navigate this, check your vehicle's manual or consult with a professional to determine the type of transmission you have. Choose an additive that explicitly states it is compatible with your transmission type to ensure optimal performance and avoid potential issues.
PurposeThe purpose of a transmission additive can vary, including reducing friction, preventing leaks, cleaning the transmission, or improving shifting performance. This is important because different additives are formulated to address specific issues. To choose the right one, identify the primary issue you are experiencing with your transmission. For example, if you have rough shifting, look for an additive that improves shifting performance. If you are dealing with leaks, choose one that seals leaks. Understanding your specific need will guide you to the appropriate product.
Additive TypeAdditive type refers to the chemical composition and formulation of the transmission additive, such as synthetic or petroleum-based. This is important because different formulations can have varying effects on your transmission. Synthetic additives often provide better performance and protection, while petroleum-based additives may be more cost-effective. To navigate this, consider the age and condition of your transmission. For newer or high-performance transmissions, synthetic additives may be more suitable. For older or less demanding transmissions, petroleum-based additives might suffice.
ViscosityViscosity refers to the thickness or flow characteristics of the transmission additive. This is important because the right viscosity ensures proper lubrication and protection of transmission components. To navigate this, check your vehicle's manual for the recommended viscosity range. Choose an additive that matches this range to ensure it works effectively with your transmission. If you are unsure, consulting with a professional can help you determine the appropriate viscosity for your specific vehicle.
Additive ConcentrationAdditive concentration refers to the amount of active ingredients in the transmission additive. This is important because higher concentrations can provide more effective results, but may also require more careful handling. To navigate this, consider the severity of the issue you are addressing. For minor issues, a lower concentration additive may be sufficient. For more severe problems, a higher concentration additive might be necessary. Always follow the manufacturer's instructions for the correct dosage to avoid overuse, which can potentially harm your transmission.