Synthetic Oil

[Pavel Olavich]

Originally Posted by Black Yaris

It does not state.... A Prius also takes 5w-20 or 0w-20 synthetic oil from the factory, even states it in the manual
so why would it matter where you live, and what temp it gets?
One of the whole reasons of switching to synthetic oil is that it does not break down as fast, heat being one of those major factors.

Gosh you are spewing all kinds of superstition these days....the viscosity does matter for different climates....just look at nearly any owners manual...when they talk about viscosity, they do it WITH A TEMPERATURE GRAPH....THE LOWER THE OUTSIDE AMBIENT TEMP THE LOWER THE VISCOSITY TO USE.....

Why do you think that the Yaris TSB for lighter oil usage WAS NOT ISSUED FOR CALIFORNIA TOYOTA OWNERS! I was at the dealer today, and he could not find that TSB on his computer...he did find it for other parts of the USA (cooler climates) however.