Ranger (GM) Ranger A

Automatic transmission fluid capacity & service interval

Ranger (GM) Ranger A automatic transmission fluid capacity is 2,5 liters. Service intervals include checks every 10000 km or 6 months and changes every 40000 km or 24 months. The data covers 4 configurations.

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

TypeSpecifications
1700 (1970-1972)
  • Use: Normal
  • Capacity 2,5 liter (Refill)
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
  • Code: THM 180 3/1
1900 (1970-1972)
  • Use: Normal
  • Capacity 2,5 liter (Refill)
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
  • Code: THM 180 3/1
2500 (1970-1972)
  • Use: Normal
  • Capacity 2,5 liter (Refill)
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
  • Code: THM 180 3/1
2500 GTS (1970-1972)
  • Use: Normal
  • Capacity 2,5 liter (Refill)
  • Check 10000 km/ 6 months
  • Change 40000 km/ 24 months
  • Code: THM 180 3/1

Additional Notes

  • Across all four engine variants of the GM Ranger A — the 1700, 1900, 2500, and 2500 GTS — the automatic transmission refill capacity is uniformly listed at 2.5 liters for the 1970-1972 model years.
  • The 2.5-liter figure is designated as a refill capacity, meaning it represents the amount of fluid added during a routine service rather than the total system volume required when filling a dry or overhauled transmission.
  • The check interval for automatic transmission fluid is set at 10,000 km or 6 months under normal use conditions, whichever comes first.
  • The fluid change interval under normal use is specified at 40,000 km or 24 months, placing a full drain-and-refill cycle on a two-year or distance-based schedule.
  • The ratio between the check interval and the change interval is four to one on a distance basis, meaning four inspection points occur for every single fluid change cycle across all listed configurations.
  • No variation in capacity or service intervals exists across the 1700, 1900, 2500, and 2500 GTS engine types, indicating a shared automatic transmission specification regardless of engine displacement within the Ranger A lineup for 1970-1972.

Other Systems