The 2004 Buick Regal has 12 valves.

The 2011 Buick Regal has 16 valves.

The 2012 Buick Regal has 16 valves.

The 2002 Buick Regal has 12 valves.

The 2014 Buick Regal has 16 valves.

The 2003 Buick Regal has 12 valves.

The 2013 Buick Regal has 16 valves.

The 2001 Buick Regal has 12 valves.

The gas tank on the 2004 Buick Regal holds 17 gal..

The 2004 Buick Regal's engine produces 200 hp @ 5200 rpm.

The 2013 Buick LaCrosse has 16 valves.

The 2013 Buick Enclave has 24 valves.

The 2012 Buick LaCrosse has 16 valves.

The 2008 Buick Enclave has 24 valves.

The 2005 Buick LaCrosse has 12 valves.

The 2010 Buick LaCrosse has 16 valves.