Hi all,
I posted on here a while ago regarding an oil recommendation for a 2000 Yaris with the 2NZ-FE engine and got some great information. (concluded to stick with 5w30 as stated in the handbook)
Since then, I've bought another Yaris, this time with the 1NZ-FE engine and noticed the oil recommendation in the handbook is 10w30.
Despite this, I came across a TSB (EG018-06) from Toyota which states ILSAC GF-4 SAE 5W-20 or ILSAC GF-4 SAE 0W-20 will perform better in the 1NZ-FE engine. However it says it only applies to 2006 - 2007 models and mine is a 2003.
So what should I go for? 0w20 seems like an extreme difference from the 10w30 that was originally put in it. Does the TSB only apply to newer models with the 1NZ-FE engine due to different materials used or ECU maps?
I'm paying attention to oils because I do a few track days per year and a mixture of highway and stop/start in the city.
I posted on here a while ago regarding an oil recommendation for a 2000 Yaris with the 2NZ-FE engine and got some great information. (concluded to stick with 5w30 as stated in the handbook)
Since then, I've bought another Yaris, this time with the 1NZ-FE engine and noticed the oil recommendation in the handbook is 10w30.
Despite this, I came across a TSB (EG018-06) from Toyota which states ILSAC GF-4 SAE 5W-20 or ILSAC GF-4 SAE 0W-20 will perform better in the 1NZ-FE engine. However it says it only applies to 2006 - 2007 models and mine is a 2003.
So what should I go for? 0w20 seems like an extreme difference from the 10w30 that was originally put in it. Does the TSB only apply to newer models with the 1NZ-FE engine due to different materials used or ECU maps?
I'm paying attention to oils because I do a few track days per year and a mixture of highway and stop/start in the city.