It is located on the bottom right hand side of your radiator. It will have a little plastic wingnut looking thing and a hose coming off of it.
Any brand coolant will work.
The 2012 Toyota 4Runner has a V6 engine.
The 2003 Toyota 4Runner has a V6 engine.
The 2005 Toyota 4Runner has a V6 engine.
The 2004 Toyota 4Runner has a V6 engine.
The 2013 Toyota 4Runner has a V6 engine.
The 2008 Toyota 4Runner has a V6 engine.
The 2009 Toyota 4Runner has a V6 engine.
The 2011 Toyota 4Runner has a V6 engine.
The 2002 Toyota 4Runner has a V6 engine.
The 2014 Toyota 4Runner has a V6 engine.
The 2007 Toyota 4Runner has a V6 engine.