This question is asked frequently. Use the oil that is recommended in your owner's manual. This is different depending on the climate where you live and for the type of driving that you do. There is no one correct answer for this question. Good luck! --Ken
The 2004 Subaru Forester has single overhead cam (SOHC).
The 2002 Subaru Forester has single overhead cam (SOHC).
The 2009 Subaru Forester has single overhead cam (SOHC).
The 2005 Subaru Forester has single overhead cam (SOHC).
The 2008 Subaru Forester has single overhead cam (SOHC).
The 2010 Subaru Forester has single overhead cam (SOHC).
The 2007 Subaru Forester has single overhead cam (SOHC).
The 2012 Subaru Forester has double overhead cam (DOHC).
The 2011 Subaru Forester has double overhead cam (DOHC).
The 2006 Subaru Forester has single overhead cam (SOHC).
The 2013 Subaru Forester has double overhead cam (DOHC).
The 2003 Subaru Forester has single overhead cam (SOHC).