Motorcraft BXT 59 - ( Tested Tough Max ) - 100 month - 36 month free replacement or Motorcraft BXS 59 - ( Power Series ) - 60 month - 18 month free replacement
The 2004 Ford Mustang has overhead valves (OHV).
5W-20 ( according to the 2004 Ford Mustang Owner Guide )
The 2001 Ford Mustang has overhead valves (OHV).
The 2003 Ford Mustang has overhead valves (OHV).
The 2002 Ford Mustang has overhead valves (OHV).
The 2008 Ford Mustang has single overhead cam (SOHC).
The 2014 Ford Mustang has double overhead cam (DOHC).
The 2006 Ford Mustang has single overhead cam (SOHC).
The 2013 Ford Mustang has double overhead cam (DOHC).
The 2010 Ford Mustang has single overhead cam (SOHC).
The 2009 Ford Mustang has single overhead cam (SOHC).
The 2005 Ford Mustang has single overhead cam (SOHC).