5w-20 Oil

[1stToyota]

Originally Posted by SilverGlow

You are very, very confused. The reason toyota does that has NOTHING to do with 0w and 5w. The reason is the differences in additive packages. For example, I would not put any 0w-20 in my Yaris, however I would put in AMSoil 0w-20 and Mobil1 0w-20, but not others.

It's about the additive packages, and not the viscosity. Now as time goes on, more 0w-20 brands will be good for the Yaris, but today not all.

Link?
Show me where Toyota says do NOT use 0w-20 because of additive packages, but use 5w-20 and 5w-30 for the Yaris (1NZ-FE) because their additive packages pown 0w-20's...all I see in Toyota's TSB is that they will allow 5w-20 but NOT 0w-20 in the Yaris motor, and there have never been little footnotes about *additive packages* as far as I can tell, plus you've ALWAYS stated that the TSB states 5w-20 is okay, so "with that being said 0w-20 is okay because it performs exactly like 5w-20" without ever mentioning certain additive packages in certain oil brands being the deciding factor.

And why would you use Amsoil 0w-20? It's not API approved...hmmmm...but the Amsoil XL 5w-20 is API approved ...bet that's another reason why the Toyota TSB says yes to 5w-20 and no to 0w-20. Bottom line: Until the TSB says yes to 0w-20 it's wrong to use it, but keep using it year round in southern California.

You must wake up in a new world every day. How many times have you claimed that brand doesn't matter, that the cheapest discount synthetic will make an engine last just as long as an expensive synthetic, like Royal Purple? I'm not the one that's confused; I use API certified oil, and the proper viscosity, you don't.