Toyota recommends a 10W-30 weight motor oil in its 2002 models. Extremely cold climates and extremely warm climates may require a different motor oil.
The 2002 Toyota Sienna has double overhead cam (DOHC).
The type of oil used in a 2011 and 2012 Toyota Sienna is the synthetic 0W-20.
The 2009 Toyota Sienna has double overhead cam (DOHC).
The 2012 Toyota Sienna has double overhead cam (DOHC).
The 2003 Toyota Sienna has double overhead cam (DOHC).
The 2007 Toyota Sienna has double overhead cam (DOHC).
The 2010 Toyota Sienna has double overhead cam (DOHC).
The 2008 Toyota Sienna has double overhead cam (DOHC).
The 2006 Toyota Sienna has double overhead cam (DOHC).
The 2005 Toyota Sienna has double overhead cam (DOHC).
The 2014 Toyota Sienna has double overhead cam (DOHC).
The 2004 Toyota Sienna has double overhead cam (DOHC).