Mercury Topaz

Differential fluid capacity & service interval

Mercury Topaz differential fluid capacity ranges from 0,65 to 7,6 liters. Service intervals include a change or check every 12000 km or 12 months. The data covers 3 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • Topaz XR5, LTS (1988-1992)
  • From automatic
  • Use: Normal
  • Capacity 3 liter
  • Check 12000 km/ 12 months
  • Topaz 4WD (1987-1992)
  • From automatic
  • Use: Normal
  • Capacity 7,6 liter
  • Change 12000 km/ 12 months
  • Topaz 4WD (1987-1992)
  • Rear
  • Use: Normal
  • Capacity 0,65 liter
  • Check 12000 km/ 12 months
  • Code: (4x4)

Additional Notes

  • The Mercury Topaz 4WD carries a differential fluid capacity of 7.6 liters when filled from automatic, a notably large volume that reflects a full-system service fill rather than a simple top-up procedure.
  • The rear differential on the 4WD configuration holds just 0.65 liters, a much smaller capacity consistent with a compact standalone rear differential unit.
  • The 4WD differential from automatic calls for a fluid change at 12,000 km or 12 months under normal use conditions, while the rear differential on the same configuration is specified for a check at the same interval rather than a full fluid change.
  • The Topaz XR5 and LTS trims, covering 1988-1992, carry a differential from automatic capacity of 3 liters, which is less than half the 7.6-liter figure specified for the 4WD configuration across the same system type.
  • On the XR5 and LTS trims, the 3-liter differential from automatic is paired with a check interval of 12,000 km or 12 months under normal use, rather than a change interval as seen on the 4WD variant.

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