10 Best Transmission Additive For Sticking Valves of December 2025

• NOT FOR USE IN CVT TRANSMISSIONS
• Transmission Shifts Like New
• Lowers Operating Temperature
• Eliminates Torque Converter Shudder
• Frees Sticking Valves

ProTecta

• Genuine OEM General Transmissions part
• General Transmissions part number GT87140 (Supersedes GT87137)
• Mower OEM part number AUC11077 (Supersedes AUC10266)
• CVT transmission

General Transmissions

• Improves the lubrication properties of the oil
• Cleans valve bores
• Suitable for use in vehicles with turbochargers and vehicles with catalytic converters
• Prevents engine noises caused by hydraulic tappets

Liqui Moly

• Guaranteed Permanent Seal
• Restores Dried, Cracked and Shrunken Seals
• Works in Gas or Diesel Engines

BlueDevil Products

• Cleans injectors, carb jets and passageways
• Cleans and lubricates intake valves, pistons and cylinders
• Dissolves and cleans fuel residue in fuel systems
• Dissolves oil deposits in crankcase
• Clean timing chain tensioners and VVT actuators, quiet noisy lifters
• 100 percent pure petroleum
• EPA registered product
• Liquefies gum and varnish deposits or internal engine contaminants
• Special Shipping Information: This item cannot be returned and has additional shipping restrictions
• Special Shipping Information: This item cannot be returned and has additional shipping restrictions

Sea Foam

• Lucas Transmission Fix Stops Slip, Hesitation, Rough Shifting In Worn Transmissions And Completely Eliminates Most Seal Leaks
• Fit Type: Universal
• Can be added to existing fluid without draining any out
• Improves shifting

LUCAS

• BOOSTS cetane up to 7 points
• INCREASES power, performance, and fuel economy
• STABILIZE fuel & disperse moisture
• INCREASES lubricity & prevent rust and corrosion
• 1-2 OZ per 25 GAL of diesel fuel
• Treats 400 Gallons
• Concentrated daily fuel booster
• Fit type: Universal Fit
• Flash point: 142.0 degrees_celsius

Hot Shot's Secret

• Professional strength fast acting resealer, stops leaks fast
• Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
• Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
• Does not contain petroleum distillates, will not over-swell or breakdown seals
• 8oz bottle will treat a 6 quart capacity, adjust accordingly

ATP Automotive

• Prevents overheating, reducing elevated operating temperatures up to 40 degrees Farenheit - Optimizes total transmission performance
• Eliminates transmission fluid foaming and oxidation and reduces wear throughout the transmission
• Eliminates clutch chatter and torque converter shudder; Softens and modifies harsh shifts making them quicker in duration
• Extends fluid life / Raises the thermal and oxidative stability of the fluid
• Only protectant that increases the fluid’s ability to transfer heat / Protects new seals and permanently restores older seals to a like-new condition, without adverse side effects

Lubegard

• For use on certain limited-slip differentials to reduce chatter and hypoid gear noise levels
• Use according to owner guide recommendations
• Tapered neck applicator for easy use
• Formulated for automotive use
• Added to lubricants to reduce the surface friction of the lubricated parts

Ford