best synthetic oil and m/t oil??

[so40]

Originally Posted by nsmitchell

The TSB, which is an update, applies to the Yaris. I'm sure the oil filler caps were created on the original specifications, now those have CHANGED for NZ series motors, like our 1NZ-FE. If you simply went by the oil filler cap, no TSB would have been needed. The reason Toyota is doing this is to improve their MPG average anyway, but what I find interesting is that these 5W-20 and especially 0W-20 oils only come in synthetics! So Toyota stock brand for these engines will be synthetic or at least a blend. This puts to bed the argument FOR DINO ONLY debates. 0W-30 is still an excellent oil and provides better protection. I believe that a synthetic 0W-20 or 5W-20 will still provide excellent anti-wear benefits though.

This was discussed very much on many forums when these TSB's came out. The conclusion was that if your specific engine is not listed, use what the oil cap says. I bet if you find someone with a new Yaris (recently made) and get them to check their oil cap, it will say 5W-30.

Mike