2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB)

MB / Sedan / Wagon (market dependent) / North America, China, Europe (Opel Insignia), and other selected global markets

LFX (2.4L I4)LSA (6.2L V8 supercharged)A16XHT (2.0L turbo I4 - China)Registro exacto de año/versiónSilver

Engine identity

Engine code

LFX (2.4L I4), LSA (6.2L V8 supercharged), A16XHT (2.0L turbo I4 - China)

Engine summary

The 2012 Buick Regal was available with multiple engines depending on the market: a naturally aspirated 2.4L inline-4 (LFX) for base models, a supercharged 6.2L V8 (LSA) in the GS variant primarily for North America, and a 2.0L turbocharged inline-4 (A16XHT) common in China and some Opel Insignia versions.

Displacement

2.4L, 6.2L, or 2.0L turbo depending on market and trim

Power

182 hp (2.4L), 270-300 hp (2.0L turbo), 409 hp (6.2L supercharged V8)

Torque

172 lb-ft (2.4L), approx. 258-295 lb-ft (2.0L turbo), 369 lb-ft (6.2L V8)

Fuel system

Sequential multi-point fuel injection (2.4L & 6.2L), direct injection combined with turbocharging (2.0L turbo)

Timing drive

Chain-driven DOHC for all engines

Puerto OBD

Verify by VIN and market

Oils and fluids

Tipo de aceite

5W-30 fully synthetic recommended

Capacidad de aceite

Approx. 5.3 L (including filter) for 2.4L and 2.0L turbo engines; about 8.5 L (including filter) for 6.2L V8; service-fill with oil filter change noted

Refrigerante

Approx. 10.5 liters for 2.4L and 2.0L turbo engines; higher for 6.2L V8 variant

Fluido

Dexron VI automatic transmission fluid recommended

Differential fluid

Synthetic gear oil per service manual, model dependent

Líquido de frenos

DOT 3 or DOT 4 depending on market

Service and parts data

Manual transmission

5-speed manual available in some markets (mostly base 2.4L)

Automatic transmission

6-speed automatic (Hydra-Matic 6T40) typical for 2.4L and 2.0L turbo; 6-speed automatic for V8 GS

Spark plugs

Iridium tip spark plugs recommended

Service interval

Every 7,500 to 10,000 miles or 12 months, depending on driving conditions

Medidas de neumáticos

225/50R17, 235/45R18, 235/40R19

Torque de rueda

Verify by VIN and market

Common and chronic problems

Timing chain tensioner noise (2.4L engines)
Supercharger wear (6.2L V8 GS models)
Turbocharger wastegate issues (2.0L turbo in some markets)

First checks

Inspect timing chain tensioner and guides
Check supercharger belts and pulleys for GS
Verify turbocharger boost and wastegate operation

Antes de cambiar piezas

Save fault codes and freeze-frame data before clearing anything.
Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

The Buick Regal 2012 is a rebadged Opel Insignia in many markets; engine and equipment content vary accordingly.
Global availability includes North America, China, and selected other markets; availability of trims and engines differs by region.

Códigos comunes

Source and verification notes

Data compiled from Buick 2012 owner manuals and technical service bulletins.
Cross-referenced with Opel Insignia 2012 technical specifications and SAE publications.

Herramientas compatibles

Verify by VIN and market

Preguntas frecuentes

What engine code does the 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) use? 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) is listed here with engine code LFX (2.4L I4), LSA (6.2L V8 supercharged), A16XHT (2.0L turbo I4 - China); engine summary: The 2012 Buick Regal was available with multiple engines depending on the market: a naturally aspirated 2.4L inline-4 (LFX) for base models, a supercharged 6.2L V8 (LSA) in the GS variant primarily for North America, and a 2.0L turbocharged inline-4 (A16XHT) common in China and some Opel Insignia versions..
What oil and capacity does the 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) use? 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) is listed with 5W-30 fully synthetic recommended and oil capacity Approx. 5.3 L (including filter) for 2.4L and 2.0L turbo engines; about 8.5 L (including filter) for 6.2L V8; service-fill with oil filter change noted. Confirm market and engine option before service.
What are common 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) problems? Highlighted checks for 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB): Timing chain tensioner noise (2.4L engines), Supercharger wear (6.2L V8 GS models), Turbocharger wastegate issues (2.0L turbo in some markets).

Engine identity

Engine code

LFX (2.4L I4), LSA (6.2L V8 supercharged), A16XHT (2.0L turbo I4 - China)

Engine summary

Displacement

2.4L, 6.2L, or 2.0L turbo depending on market and trim

Power

182 hp (2.4L), 270-300 hp (2.0L turbo), 409 hp (6.2L supercharged V8)

Torque

172 lb-ft (2.4L), approx. 258-295 lb-ft (2.0L turbo), 369 lb-ft (6.2L V8)

Fuel system

Sequential multi-point fuel injection (2.4L & 6.2L), direct injection combined with turbocharging (2.0L turbo)

Timing drive

Chain-driven DOHC for all engines

Puerto OBD

Verify by VIN and market

Oils and fluids

Tipo de aceite

5W-30 fully synthetic recommended

Capacidad de aceite

Approx. 5.3 L (including filter) for 2.4L and 2.0L turbo engines; about 8.5 L (including filter) for 6.2L V8; service-fill with oil filter change noted

Refrigerante

Approx. 10.5 liters for 2.4L and 2.0L turbo engines; higher for 6.2L V8 variant

Fluido

Dexron VI automatic transmission fluid recommended

Differential fluid

Synthetic gear oil per service manual, model dependent

Líquido de frenos

DOT 3 or DOT 4 depending on market

Service and parts data

Manual transmission

5-speed manual available in some markets (mostly base 2.4L)

Automatic transmission

6-speed automatic (Hydra-Matic 6T40) typical for 2.4L and 2.0L turbo; 6-speed automatic for V8 GS

Spark plugs

Iridium tip spark plugs recommended

Service interval

Every 7,500 to 10,000 miles or 12 months, depending on driving conditions

Medidas de neumáticos

225/50R17, 235/45R18, 235/40R19

Torque de rueda

Verify by VIN and market

Preguntas frecuentes

What engine code does the 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) use? 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) is listed here with engine code LFX (2.4L I4), LSA (6.2L V8 supercharged), A16XHT (2.0L turbo I4 - China); engine summary: The 2012 Buick Regal was available with multiple engines depending on the market: a naturally aspirated 2.4L inline-4 (LFX) for base models, a supercharged 6.2L V8 (LSA) in the GS variant primarily for North America, and a 2.0L turbocharged inline-4 (A16XHT) common in China and some Opel Insignia versions..

What oil and capacity does the 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) use? 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) is listed with 5W-30 fully synthetic recommended and oil capacity Approx. 5.3 L (including filter) for 2.4L and 2.0L turbo engines; about 8.5 L (including filter) for 6.2L V8; service-fill with oil filter change noted. Confirm market and engine option before service.

What are common 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB) problems? Highlighted checks for 2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB): Timing chain tensioner noise (2.4L engines), Supercharger wear (6.2L V8 GS models), Turbocharger wastegate issues (2.0L turbo in some markets).

2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Antes de cambiar piezas

Important notes

Scanning Engine...

2012 BUICK Regal LFX (2.4L I4)/LSA (6.2L V8 supercharged) (MB)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Antes de cambiar piezas

Important notes