The last gas question

[frownonfun]

Originally Posted by Ace

nice... and I can find a place where it say it's the minimum you should use.

well you asked to show you a place and i did... if still wanna continue to disregard this info that's really ok with me. i'm just gonna run the minimum or recommended because i certainly haven't seen any information supporting the use of a higher octane.

[Ace]

Originally Posted by frownonfun

well you asked to show you a place and i did... if still wanna continue to disregard this info that's really ok with me. i'm just gonna run the minimum or recommended because i certainly haven't seen any information supporting the use of a higher octane.

Yes, you did. But the link is a press release (marketing) and not for the end user. The document that was given to me when I bought my Yaris states “Octane Rating 87 or higher” and not “87 octane is recommended”.

My point is if you going to say high octane for a Yaris is a waste of money then show me. I don't want to see some out dated article from before the days people bought 10.5:1 compression ratio engines off the car lot.

[frownonfun]

Originally Posted by Ace

Yes, you did. But the link is a press release (marketing) and not for the end user. The document that was given to me when I bought my Yaris states “Octane Rating 87 or higher” and not “87 octane is recommended”.

My point is if you going to say high octane for a Yaris is a wastes of money then show me. I don't want to see some out dated article from before the days people bought 10.5:1 compression ratio engines off the car lot.

from what i am reading the engine has a high compression ratio, yes. but because of a delayed closing intake valve which lets air escape the cylinder freely rather than being compressed, the compression is reduced. this in order to make it more fuel efficient.

bottom line is the yaris was never intended for performance so there really is no reason to think that it would benefit from a higher octane. the whole purpose of the nz family of engines, i think, was for use with a hybrid electric motor. toyota's intent is to make the engine as fuel efficient as possible so i don't see any reason why a higher octane would be beneficial.

and yes you can find places where it states 87 is recommended and some places where it states it's the minimum but i think the fact that you can't really find any place that states higher octanes improve performance says a lot.