Motor Oil and filters

[SilverGlow]

Originally Posted by 1stToyota

And regardless of what that Toyota TSB actually says?

It clearly states that 5w-20 is fine to use now, but the note at the top of the TSB says to stick with what's listed in the service manuals, owner's manual and oil cap, which happens to be 5w-30.

Looks like the dealer drew his own conclusions about what's best, just like you did when you started using and recommending Yaris owners to use 0w-20 because of UOAs for non-Yaris motors, and because the TSB said 0w-20 was okay to use in a Corolla, Scion XD, etc...but if I can read between the lines I'm guessing that you drained out the 0w-20 and took the dealer's advice about the 5w-20.

Nope, I'm still running 0w-20 because I know that at operational temps 0w-20 and 5w-20 provide the SAME protection. And the UOA's I've seen are for Yaris SPECIFICLY.

I have the TSB in front of me and it says that the Yaris engine can use the 20 weight. So where is the confusion? Where is the ambiguity?

It's very, very clear. If you have a Yaris, you can use 20 weight safely, and Toyota is behind what I wrote.

And if you look at the AMSOIL site (and Mobil1 too), you too will see that their 0w-20 can be used in ANY MOTOR that is spec'd for 5w-20. Safely.

So is your beloved AMSOIL wrong? Not!