high octane fuel

[shazoo]

hi there,

i have vitz 2003 with 1SZ-FE.want to ask if can use high actane fuel in my car?does this increas fuel economy and performance?or effect my engine performance and life ? thanks for any feed back

[jambo101]

Wont do anything except leave less money in your pocket after fill up..
Welcome to the forum

[buci]

It will do absolutely nothing, neither good or bad. I wrote this when a friend of mine asked the same question how to send his money down the drain ,http://www.carinstructions.com/regular-vs-premium-gas/

[JNEG]

Rule of thumb is to use what the manufacturer recommends; spending more on a higher octane just makes the oil companies richer than they already are! In many cases you can use a lower octane fuel, but it usually decreases performance, and should never be used if a pinging sound from your engine results from it.

[htwo]

Originally Posted by jambo101

Wont do anything except leave less money in your pocket after fill up..
Welcome to the forum

X2. Running a higher octane isn't necessary as the PCM will just alter the A/F ratio to compensate. It won't add power.

[AlaricD]

Sometimes using higher octane fuel than what the manufacturer recommends can lead to increased carbon buildup in the combustion chamber.

[PhatRoyale]

Originally Posted by shazoo

hi there,

i have vitz 2003 with 1SZ-FE.want to ask if can use high actane fuel in my car?does this increas fuel economy and performance?or effect my engine performance and life ? thanks for any feed back

yes. no. no.

stick with regular.