Buick Envista, VSS-F (USA / CAN)

Automatic transmission fluid capacity & service interval

Buick Envista, VSS-F (USA / CAN) automatic transmission fluid capacity ranges from 4 to 8,5 liters. The service interval is 45000 miles. The data covers 3 configurations.

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

TypeSpecifications
Envista 1.2 Turbo (FlexFuel) (2024- )
  • Use: Severe
  • Capacity 8,5 liter
  • Change 45000 miles
  • Code: 6T40 6/1
Envista 1.2 Turbo (2023- )
  • Use: Normal
  • Capacity 8-8,5 liter (Overhaul capacity)
  • Capacity 4-6 liter (Service fill)
  • Code: 6T40 6/1
Envista 1.2 Turbo (2023- )
  • Use: Severe
  • Capacity 8-8,5 liter (Overhaul capacity)
  • Capacity 4-6 liter (Service fill)
  • Change 45000 miles
  • Code: 6T40 6/1

Additional Notes

  • The Buick Envista 1.2 Turbo automatic transaxle carries an overhaul capacity of 8 to 8.5 liters, which reflects the total fluid volume required when the unit is fully disassembled and refilled from dry.
  • The service fill capacity for the 1.2 Turbo automatic transaxle is 4 to 6 liters, a notably lower figure than the overhaul capacity because a drain-and-fill procedure leaves residual fluid in the torque converter and valve body passages.
  • Under severe use conditions, the 1.2 Turbo automatic transaxle carries a fluid change interval of 45,000 miles, while no interval figure appears for normal use conditions in the same configuration.
  • The 1.2 Turbo FlexFuel variant, introduced for 2024, lists a single capacity value of 8.5 liters rather than a range, and a severe-use change interval of 45,000 miles applies to that configuration as well.
  • The FlexFuel automatic transaxle capacity of 8.5 liters aligns with the upper bound of the standard 1.2 Turbo overhaul range, suggesting the two units share closely related hardware dimensions.

Other Systems