You may have filled the wrong thing with the wrong fluid. The front differential dipstick is on the passenger side of the engine and very easy to see. The ATF dipstick is on the driver's side of the engine and difficult to see, especially on the turbo models. (behind the intercooler).
If you did this, drain any ATF you may have added to the front differential and fill with 75w90 gear oil.
The 2004 Subaru Forester has a 5-speed manual.
The 2006 Subaru Forester has a 5-speed manual.
The 2001 Subaru Forester has a 5-speed manual.
The 2012 Subaru Forester has a 5-speed manual.
The 2008 Subaru Forester has a 5-speed manual.
The 2010 Subaru Forester has a 5-speed manual.
The 2005 Subaru Forester has a 5-speed manual.
The 2013 Subaru Forester has a 5-speed manual.
The 2003 Subaru Forester has a 5-speed manual.
The 2007 Subaru Forester has a 5-speed manual.
The 2011 Subaru Forester has a 5-speed manual.
The 2009 Subaru Forester has a 5-speed manual.