You can use either regular unleaded or premium unleaded.
The 2003 Cadillac Escalade runs on regular unleaded.
The 2002 Cadillac Escalade runs on regular unleaded.
The 2007 Cadillac Escalade runs on regular unleaded.
The 2008 Cadillac Escalade runs on regular unleaded.
The 2004 Cadillac Escalade runs on regular unleaded.
The 2006 Cadillac Escalade runs on regular unleaded.
The 2005 Cadillac Escalade runs on regular unleaded.
The 2013 Cadillac Escalade runs on flex-fuel (FFV).
The 2010 Cadillac Escalade runs on flex-fuel (FFV).
The 2014 Cadillac Escalade runs on flex-fuel (FFV).
The 2011 Cadillac Escalade runs on flex-fuel (FFV).
unleaded fuel graded above 87