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!

[1stToyota]

Originally Posted by SilverGlow

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.

Then quit quoting the Toyota TSB and acting like you know something if you're going to continue using a viscosity that the TSB says is NOT to be used in the Yaris 1NZ-FE motor.

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 doesn't say to use straight 20 weight, it doesn't say to use 0w-20, it says 5w-20

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

Absolutely false...it never, never says that 0w-20 is to be used, you're confusing the 0w-20 being okay for a Corolla and the XD, etc... and 5w-20 being okay for the Yaris.

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.

But that contradicts the guidelines of Toyota's TSB, and that's what Toyota will go by, what their TSB states, not AMSOIL's override.

So is your beloved AMSOIL wrong? Not!

Check my sig. Not using AMSOIL anymore because to get API approval ACEA A1/B1 is what I get, with no API approval I can get A5/B5, but if I ever have any warranty issues I want an oil that is API approved....and better than A1/B1 for my own reasons.

And they are wrong when their statements clash with Toyota's TSB guidelines, and still have to wonder why you're soooo worried about 0w-20 when you live in southern Ca that wouldn't know what a real winter was.