1NZ-FE 5W-20 Specifications Manual

[ricardocanedo621]

I found a Specifications Manual for a Toyota Yaris Sedan and it lists 5W-20 not 5W-30. Not sure what year it's for but wondering why it differs.

http://www.toyota.com/t3Portal/document/om/OM52B83U/pdf/sec_6-1.pdf

[Lux]

Toyota TSB EG018-06 issued on 2006.03.29 states that SAE 5W-20 engine oil has been retroactively approved for engines that previously specified SAE 5W-30 or other viscosities.
Their literature adjustment has been inconsistent; some regions retain their 5W-30 rating while others have been switched over.
This redaction comes on the heels of bending their fuel economy ratings in order to remain competitive.
More specifically against Honda's 0W-20 pumping engines of the time.

TSB here: http://www.toyotapart.com/ILSAC_GF-4_ENGINE_OIL_RECOMMENDATION_TS-EG018-06.pdf

[Ben_]

I've been running 5w-20 for about 30k miles

[IllusionX]

Nothing wrong with either. I think in hotter regions like AZ retain the 5w30.

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[Ben_]

5w-30 is probably better for engine life but 5w-20 is better for efficiency since the oil pump doesn't have to push as hard