The 1998 Cadillac Brougham has a fuel capacity of 25 gallons.
They have a 25 gallon tank, but can only hold 23.75 gallons (gas tanks need 5% of their capacity for vapor expansion)
in the gas tank
The 1999 Cadillac Eldorado has a fuel tank capacity of around 20 gallons.
The gas tank on the 2009 Cadillac SRX holds 20 gal..
The gas tank on the 2006 Cadillac CTS holds 17.0 gal..
The gas tank on the 2008 Cadillac CTS holds 18.0 gal..
The gas tank on the 2010 Cadillac SRX holds 21 gal..
The gas tank on the 2008 Cadillac Escalade holds 26.0 gal..
The gas tank on the 2010 Cadillac Escalade holds 26.0 gal..
The gas tank on the 2013 Cadillac Escalade holds 26.0 gal..
The gas tank on the 2011 Cadillac Escalade holds 26.0 gal..