Spirax S4 ATF HDX is a superior quality automatic transmission fluid suitable for heavy duty automotive transport and passenger car transmissions.

Based on synthetic technology base fluid, Spirax S4 ATF HDX is the ultimate performance automatic transmission fluid allowing extended drain intervals even under the most severe conditions.


  • Automotive automatic transmissions
  • Automotive hydraulic systems
  • Power steering
  • Certain manual transmissions

Specification and Approvals

  • Ford – MERCON
  • General Motors Allison – C-4
  • ZF TE-ML – 04D-09-14B-16L-17C
  • Voith – 55.6336 (ex G1363)
  • MB – 236.9
  • MAN – 339 Typ Z2, 339 Typ V2

Typical Physical Characteristics

Spirax S4 ATF HDX
Kinematic Viscosity

at  40°C                                                                    mm2/s at 100°C                                                                   mm2/s

Viscosity Index

ISO 3104




ISO 2909





Density at 15°C                                                               kg/m3 ISO 12185 847
Flash Point COC                                                                    °C ISO 2592 185
Pour Point                                                                              °C ISO 3016 -48

These characteristics are typical of current production.  Whilst future production will conform to Shell’s specification, variations in these characteristics may occur.

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