What kind of fuel does the 2011 Buick LaCrosse use?
The 2011 Buick LaCrosse could use either regular unleaded gasoline (87 octane) or premium unleaded gasoline (91 octane), depending on the engine. The 3.0L V6 engine recommended regular unleaded, while the 3.6L V6 likely recommended premium for optimal performance, though it might tolerate regular. Always check the owner's manual for the specific recommendation for your particular 2011 LaCrosse.