SuPing Lyu 
2006 Toyota Sienna Minivan LE 7-Passenger 4dr Minivan AWD (3.3L 6cyl 5A)
5 time radiator leaking in 10 years
 I bought an Sienna LE AWD in 2005.  I had radiator leaking for 5 times!  Once very 2 years!  Over $800 for each replacement. An Toyota dealer said that this was not uncommon.