5w-20 Oil

[craigq]

Originally Posted by 1stToyota

If I lived in Japan, that's what I'd use.

And I guess 0w-20 and 5w-20 isn't the same, or the Toyota TSB would allow both for our 1NZ-FE, but they don't...and funny that Amsoil's 5w-20 is API certified, but their 0w-20 isn't.

1. Yes 1stT, you're right and "he's" wrong. At least in your mind...

2. Do you honestly believe that 1NZFE's internals (i.e. bearing clearances etc) are different for JDM engines and engines bound for export destinations? Thus allowing 0W20 in one and unable to use that oil in another? Furthermore, the two local Toyota dealerships that I go to to get my parts are okay with putting 0W20 in a 1NZFE. I'm fairly certain if it was going to void warranties and cause engines to self-destruct they would not be advising its use it due to liability reasons...

3. API licensing costs money, companies have to pay fees to be able to put the little starburst or whatever else certification symbol on their oil bottles. The actual market for 0W20's as required by engine manufacturers in N.A. is very small. It is likely not worth the money for Amsoil to go through the API certification process for their 0W20.

You seem pretty adamant about following that TSB, about the whole 5W20 is okay but 0W20 will obliterate the 1NZFE. Go ahead and use the 5W20 and be happy. I hope you didn't rag on people if they used 5W20 in their 1NZFE's before that TSB or some "approved list" was released...