Originally Posted By: kschachn
Thanks for the pic! Did you happen to pull the rear valve cover? In my experience that bank gets quite a bit hotter than the front, just wondering if you looked there. Those seals will be cooked too.
I'm about to replace the rear valve cover gasket along with a bunch of other stuff (timing belt, etc.) at 300,000 miles in my Sienna. For reference, here is a thread I started when I did some maintenance at 232,000 miles:
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/2204086/1
Your regimen of short OCIs on synthetic is the way to go in these 1MZ-FE engines.
I have looked at your pics before, looking good! I did not take any pics of the rear but it looked just like the front.
I did a laundry list of things that totaled up to about $1,200. TB kit, plugs, wires, all cooling hoses, t-stat, rad cap, valve cover gaskets, pcv, pcv grommet, cam seals, crank seal, A/C & P/S belts, fuel filter, and quick struts. Most all my parts were OEM. Amazon has a great price on an OEM Aisin TB kit (TKT-024) which includes the hydraulic tensioner and idler bearings. All the other OEM stuff came from a dealer in VA and it didn't add that much to the cost vs. aftermarket items. The nicest thing was the plug wires that came already loomed.
Now hopefully all I need to do in the next 112,000 miles is change oil and filters.
I have an OEM set of heater hoses (engine to heater coil) if anyone is interested. PM me.