oil viscosity in 2009 yaris

[TheSilkySmooth]

Originally Posted by jweidemannjr

Correct, I didn't say the 0W-30 was the Extended Life Oil. The Advanced Fuel Economy oil is the one that comes in 0-W30. The Extended Life Oil comes in 5W-30 I believe.

And Mobile 1 5W-30 is fully synthetic, it's not a semi-synthetic. The Mobil 1 website explains it all.

According to the material safety data sheet in countries requireing full disclosure, (MSDS) its < 30% PolyalphaOlifin. Oil Co's called refined mineral oil synthetic now. Evil BP (Castrol) started this name game in the early 90s. So Synpower, Syntec and M1 in the pop 5w-30 are not synthetic - and some of them have NO synthetic components. Dont trust anyone over 30 ;) and dont trust an oil co to tell you the TRUTH