HiTEC® 3421

Multi-vehicle ATF Additive Package for Older Transmissions
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Key Performance Benefits

HiTEC® 3421 additive benefits include:

  • Performance demonstrated in IIIH and Ford tests
  • Suitable for use in applications requiring Allison C-4 and TES-389 fluids
  • Excellent anti-wear protection
  • Superior oxidation control
  • Superior friction performance



HiTEC® 3421 Automatic Transmission Fluid (ATF) additive has been formulated to meet the stringent transmission fluid requirements of Ford and General Motors. HiTEC® 3421 ATF additive is suitable for use in all Ford and General Motors vehicles of model years 2006 and earlier, excluding those vehicles specifying a Type F® fluid.


Typical Characteristics

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Characteristics Table

Handling Information

Max Handling Temp: 70°C
Shelf Life: 24 months


Recommended Dosage

HiTEC® 3421 ATF additive package is used at 8.2 % wt. Please contact your Afton Chemical representative for specific recommendations.

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