Buick Lucerne (USA / CAN)

Automatic transmission fluid capacity & service interval

Buick Lucerne (USA / CAN) automatic transmission fluid capacity ranges from 7 to 14,2 liters. Service intervals include checks every 12 months and changes at 80000 km or 160000 km. The data covers 16 configurations.

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

TypeSpecifications
Lucerne 3.9 FlexFuel V6 (2011-2011)
  • Use: Normal
  • Capacity 7 liter
  • Check 12 months
  • Change 160000 km
  • Code: Hydra-Matic 4T65 4/1
Lucerne 3.9 FlexFuel V6 (2011-2011)
  • Use: Severe
  • Capacity 7 liter
  • Check 12 months
  • Change 80000 km
  • Code: Hydra-Matic 4T65 4/1
Lucerne 4.6 V8 (2011-2011)
  • Use: Normal
  • Capacity 7 liter
  • Check 12 months
  • Change 160000 km
  • Code: Hydra-Matic 4T80 4/1
Lucerne 4.6 V8 (2011-2011)
  • Use: Severe
  • Capacity 7 liter
  • Check 12 months
  • Change 80000 km
  • Code: Hydra-Matic 4T80 4/1
Lucerne 3.9 V6 (2008-2011)
  • Use: Normal
  • Capacity 7 liter
  • Check 12 months
  • Change 160000 km
  • Code: Hydra-Matic 4T65 4/1
Lucerne 3.9 V6 (2008-2011)
  • Use: Severe
  • Capacity 7 liter
  • Check 12 months
  • Change 80000 km
  • Code: Hydra-Matic 4T65 4/1
Lucerne 4.6 V8 (2008-2011)
  • Use: Normal
  • Capacity 7 liter
  • Check 12 months
  • Change 160000 km
  • Code: Hydra-Matic 4T80 4/1
Lucerne 4.6 V8 (2008-2011)
  • Use: Severe
  • Capacity 7 liter
  • Check 12 months
  • Change 80000 km
  • Code: Hydra-Matic 4T80 4/1
Lucerne 3.8 V6 (2005-2008)
  • Use: Normal
  • Capacity 12,7 liter (Dry fill)
  • Capacity 9,5 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 160000 km
  • Code: 4T65-E 4/1
Lucerne 3.8 V6 (2005-2008)
  • Use: Severe
  • Capacity 12,7 liter (Dry fill)
  • Capacity 9,5 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 80000 km
  • Code: 4T65-E 4/1
Lucerne 3.8 V6 (2005-2008)
  • Use: Normal
  • Capacity 14,2 liter (Dry fill)
  • Capacity 12 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 160000 km
  • Code: 4T80-E 4/1
Lucerne 3.8 V6 (2005-2008)
  • Use: Severe
  • Capacity 14,2 liter (Dry fill)
  • Capacity 12 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 80000 km
  • Code: 4T80-E 4/1
Lucerne 4.6 V8 (2005-2008)
  • Use: Normal
  • Capacity 12,7 liter (Dry fill)
  • Capacity 9,5 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 160000 km
  • Code: 4T65-E 4/1
Lucerne 4.6 V8 (2005-2008)
  • Use: Severe
  • Capacity 12,7 liter (Dry fill)
  • Capacity 9,5 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 80000 km
  • Code: 4T65-E 4/1
Lucerne 4.6 V8 (2005-2008)
  • Use: Normal
  • Capacity 14,2 liter (Dry fill)
  • Capacity 12 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 160000 km
  • Code: 4T80-E 4/1
Lucerne 4.6 V8 (2005-2008)
  • Use: Severe
  • Capacity 14,2 liter (Dry fill)
  • Capacity 12 liter (Overhaul capacity)
  • Capacity 7 liter (Service fill)
  • Check 12 months
  • Change 80000 km
  • Code: 4T80-E 4/1

Additional Notes

  • The Buick Lucerne 3.8 V6 and 4.6 V8 configurations from 2005-2008 each carry two distinct dry fill capacity figures: 12.7 liters and 14.2 liters. These differing dry fill values indicate two separate transaxle variants were used across those model years, as a dry fill represents the total fluid volume required when filling a completely empty unit from scratch.
  • Overhaul capacity figures for the 2005-2008 3.8 V6 and 4.6 V8 transaxles are listed at either 9.5 liters or 12.0 liters, depending on the transaxle variant. Overhaul capacity reflects the amount of fluid needed after a full disassembly and reassembly, where internal passages and components have been drained and cleaned but some residual fluid may remain in certain cavities.
  • Across all 2005-2008 3.8 V6 and 4.6 V8 variants, the service fill capacity is consistently 7.0 liters regardless of which transaxle variant is fitted. Service fill refers to the volume added during a routine fluid exchange, where the torque converter and some internal passages retain fluid and are not fully evacuated.
  • The 3.9 V6, 3.9 FlexFuel V6, and 4.6 V8 configurations from 2008-2011 onward list only a single 7.0-liter capacity figure with no separate dry fill or overhaul values. This aligns with the service fill figure seen in the earlier variants, suggesting a different transaxle generation or a simplified specification presentation for those years.
  • All configurations across the full 2005-2011 range share a 12-month fluid check interval. A periodic check interval of this frequency is standard practice for automatic transaxle fluid, allowing detection of contamination, discoloration, or level loss between scheduled change intervals.
  • Under normal use conditions, the fluid change interval for all listed Lucerne configurations is 160,000 km. Under severe use conditions, the same interval is halved to 80,000 km. Severe use typically encompasses conditions such as frequent towing, extended idling, or operation in extreme temperatures, all of which accelerate fluid degradation.
  • The severe-use 80,000 km change interval applies uniformly across every engine variant and model year listed, from the 2005-2008 3.8 V6 through to the 2011 4.6 V8. No configuration carries a shorter or longer severe-use interval than 80,000 km.
  • The 3.9 FlexFuel V6 variant, covering the 2011 model year, shares identical capacity and interval specifications with the standard 3.9 V6 from 2008-2011. Both list a single 7.0-liter capacity, a 12-month check interval, and the same 160,000 km normal or 80,000 km severe change intervals.

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