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Old 09-04-2015, 06:12 PM   #1
ricardocanedo621
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1NZ-FE 5W-20 Specifications Manual

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/docum...df/sec_6-1.pdf
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Old 09-04-2015, 08:45 PM   #2
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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...S-EG018-06.pdf
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Old 09-04-2015, 08:48 PM   #3
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I've been running 5w-20 for about 30k miles
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Old 09-04-2015, 09:25 PM   #4
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Nothing wrong with either. I think in hotter regions like AZ retain the 5w30.

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Old 09-04-2015, 10:46 PM   #5
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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
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