finally found the 5w-20 TSB...

[sambo42xa]

(2 post before me....) Read the TSB where it shows/says at the bottom, "oil recommended for these engines". If Your engine code falls in the list, then I do not see a problem using the 0-20 from what I understand after reading static808 TSB.
I will look at my "code" and if it is in the list I will try the 0-20 weight on my next oil change.
static808, I'm curious on the warranty part. There is nothing there. Does this mean NO WARRANTY if you use/change over to the 0-20??
Also, how did you obtain this TSB; something You found online; work for TOYOTA???

thnx.,
sambo42xa
Southern, NH

[static808]

Originally Posted by sambo42xa

Also, how did you obtain this TSB; something You found online; work for TOYOTA???

thnx.,
sambo42xa
Southern, NH

i actually found this on my other board, siennaclub.org. people over there are just as torn as people over here regarding switching over or not. im giving it a shot since we all could use the extra mpg, and i just called toyota's customer experience line, and they stated that as long as our engine is listed in the tsb, our warranties will be covered as usual, should anything happen because of the use of 20 weight oil.

with regards to using 0w-20, instead of 5w-20, amsoil only carries an 0w-20, and they state that it is intended to replace conventional 5w-20 as well. they also mention how honda, toyota and gm are starting to recommend using 20 weight oil. its just like their series 2000 0w-30 oil; it is intended to replace 5w-30 oil also. same viscosity characteristics as the 5w's, just better cold weather start-up. an 0w designation also simply means a synthetic formula, since i cant find a conventional-dino 0w oil. its odd how this tsb actually "unofficially" has toyota endorsing synthetic oil use. i dont want to start another convetional vs synthetic debate, but i just wanted to post this thread out there for people who had heard of this tsb but actually could never find it. now we can all start getting better mpg without wondering whether using this weight oil will adversely affect our engines... hope this helps!

--B