Tom 
2005 Toyota Sienna Minivan LE 7-Passenger Fwd 4dr Minivan (3.3L 6cyl 5A)
Death by sludge
 Great comfort, decent performance are the strengths here. Fuel Economy is lacking. It is no better than a Durango with a v8 Hemi.  Despite faithful 3k mile oil changes (every 5k when switched to synthetic at 30k) sludge managed to best our engine. Despite showing all maintenance receipts for 5 year history. Toyota insists it was our lack of maintenance that caused the sludge and refuses to honor the warranty. Never again will we buy Toyota.