Originally Posted By: NeuroticHapiSnak
Any reason you're using 5w30? Weren't the 1NZ-FXE Priusi back spec'ed to 5w20? I only know this because I have a Yaris with the 1NZ-FE which wasn't back spec'ed to 5w20 with all the other Toyotas, all though many Yari owners have used 5w20 with no problems.
Mmmm, my manual states 5w30. I've mostly used that with good results (uoa's with low wear). 5w20 oil no matter the brand seems to stir up more of a racket in the engine for some reason. I'll probably stick with what works.