Best Transmission Stop Leak Additive in 2022 [*Top Picks*]

534 Reviews Scanned

• Bestseller #1

  Bar's Leaks 1420 Transmission Stop Leak - 11 oz. , Grey (1976)

  Stops and seals transmission fluid leaks Works with all types of transmission fluids Restores gasket and seals to stop transmission fluid leaks item package weight: 0.81 pounds

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• Bestseller #1

  Lucas LUC10009 Transmission Fix 24 oz., Brown (Packaging May Vary) , White (386)

  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

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• Bestseller #1

  Bar's Leaks High Mileage Transmission Repair, 16.9 Fl Oz (386)

  Restores performance Stops slipping and prevents lazy shifts Quiets noise Stops leaks Conditions seals and o-rings

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• Bestseller #1

  BlueDevil Transmission Sealer (386)

  Guaranteed Permanent Seal Restores Dried, Cracked, and Shrunken Rubber Seals Works in Manual or Automatic Transmissions

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• Bestseller #1

  K&W 402033X6 Trans-X Automatic Transmission Stop Leak & Tune-Up - 32 Fl Oz Leak Repair Solution for Automotive, Power Steering, Hydraulic Systems | Car Care Fluids (386)

  K&W SEALANTS & SOLUTIONS: From head gaskets and engine blocks to automatic transmissions and power steering, K&W products are made to stop leakage in aging vehicles. Our sealants provide an effective alternative to costly repairs and parts replacements. TRANS-X STOP LEAK & TUNE-UP: Our formula prevents leaks caused by aged seals & gaskets place. Powerful cleaning agents remove sludge, gums, & varnish that helps to prevent premature failure and extends transmission life. APPLICATION RANGE: Trans-X is formulated to repair leaks in automatic transmissions, power steering, & hydraulic systems, and can be used as preventative maintenance when added to transmission fluid. This solution is not compatible with CVT or manual transmissions. SAFE HANDLING: Highly flammable leak repair solution must be stored in a well-ventilated place away from direct heat. Wear appropriate personal protective equipment such as safety glasses and gloves. PRODUCT SPECIFICATIONS: Trans-X Stop Leak & Tune-Up Solution is available with 32 fl oz. fill.

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• Bestseller #1

  LUCAS 10009-12PK Transmission Fix Stop Leak - 24 oz, (Pack of 12) (496)

  Package Dimensions: 14 L x 13.25 H x 10.75 W (inches) Package Weight : 20 pounds Fit type: Universal Country of Origin : United States

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• Bestseller #1

  Rislone High Mileage Transmission Stop Slip with Leak Repair,Pack of 1,4502 (386)

  Restores performance Quiets noise Stops leaks Stops slipping and prevents lazy shifting Conditions seals and prevents future leaks

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• Bestseller #1

  Bar's Leaks 1416 Super Transmission Fix - 16.9 oz. (386)

  Stop Slipping, Rough Shifting, & Seals Fluid Leaks Works in all Automatic, Manual, CVT, & Dual Clutch Transmissions Reduces Noise Renews Worn Bands Bar's Leaks Super Transmission Fix is a synthetic blend treatment for transmission fluid, seals, metal surfaces, bands and clutch plates.

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• Bestseller #1

  SealLube - Stops Leaks: Gasoline Engines, Diesel Engines, Automatic Transmissions, Manual Transmissions, Power Steering, Rack and Pinion, Differentials and Hydraulic Systems - 1 Gallon (23)

  STOPS LEAKS: GASOLINE ENGINES, DIESEL ENGINES, HYDRAULIC SYSTEMS, TRANSMISSIONS, POWER STEERING UNITS, RACK AND PINION, DIFFERENTIALS, A/C AND MUCH MORE! RESTORES FLEXIBILITY, ELASTICITY AND TENSILE STRENGTH OF ALL RUBBER SEALS ONE GALLON OF SEALLUBE TREATS UP TO 128 QUARTS / 32 GALLONS PROUDLY MADE IN THE USA 100% MONEY BACK GUARANTEE

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• Bestseller #1

  Bar's Leaks 1414 CVT Transmission Fix - 11 oz. (386)

  Bar’s Leaks CVT Transmission Fix is a synthetic blend treatment for the transmission fluid, seals and metal surfaces, your vehicle is a good candidate for this solution if you are noticing excessive noise, shudder, slipping, leaks, or low overall performance in your CVT CVT (Continuously Variable Transmission) design is fundamentally different from a traditional automatic transmission, conventional ATF (Automatic Transmission Fluid) and additives cannot be used in these specialized transmissions. Extreme Pressure/Anti Wear Agents Seal Conditioner and Cleaning Detergents Performance additive booster

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