yes
I was looking at the 2011 Ford Taurus Owner Guide and it shows that the SHO engine is designed to run on regular unleaded , 87 octane or higher but for best performance use premium unleaded , 91 octane or higher
The 2009 Ford Taurus runs on regular unleaded.
The 2010 Ford Taurus runs on regular unleaded.
The 2012 Ford Taurus runs on regular unleaded.
The 2008 Ford Taurus runs on regular unleaded.
The 2001 Ford Taurus runs on regular unleaded.
The 2005 Ford Taurus runs on regular unleaded.
The 2006 Ford Taurus runs on regular unleaded.
The 2002 Ford Taurus runs on regular unleaded.
The 2003 Ford Taurus runs on regular unleaded.
The 2004 Ford Taurus runs on regular unleaded.
The 2011 Ford Taurus runs on regular unleaded.