Yaris GRMN GRMN Engine Oil grade

[Agent Smith]

One for the 'technicians'....
It seems Toyota main dealers now want to put 0W-20 oil in everything, even though the GRMN user manual specifies 5W-40.
Can anyone cast any light on this? Should I be concerned? I've done 6 miles on the new oil so far.
Last years service, and all the others, was the 5W-40, this years service 0W-20....... Apparently something to do with modern oil additives taking up the slack, so to speak, and with 'emissions/mpg/otherstuff',
What does the community think about this?

 

[Sekred]

Are you referring to the 1.8L Supercharged 2ZR-FE?

 

[Agent Smith]

Howdy Sekred,
Thanks for your reply, yes I am referring to the 2018 Yaris 1.8 GRMN supercharged 2ZR.
Do you know anything about this. I have heard its something to do with projected emissions/mpg regulations, possibly from EU .....?

 

[Sekred]

I would stick with the 5W-40 or even a 0W-30 or a 5W-30 myself.

 

[Agent Smith]

Thanks for your reply, I'll run it for a couple of months over winter cold temps, then swap it out for a slightly heavier grade.

 

[Fergi]

I just had this with my 2018 GRMN. 0W20 put in by Toyota garage. I questioned this and was told it was what they now use. Went to Toyota UK and their response was 5W40 is "mandatory" for this vehicle.
I can imagine warranty claims may be complicated if your service records show the wrong oil was used.

 

[Agent Smith]

Howdy All,
For your info..... it was service time again for the GRMN, very recently, and guess what...... the dealer manager actually mentioned it while I was booking in that 5W-40 is the mandatory spec for this model.
Maybe there has been a Toyota database update, but no ambiguity/confusion, anymore, so it seems.
All services have always been followed up with the usual Toyota Email, saying the '10 year' warranty has been applied and extended.