petroll...quick question

[vectra_]

is it better to put ultimate unleaded 98 octane or is it better to put premium unleaded 95 oc ?
its a vectra 3.2 v6

[Big Sig]

98 really IMO

[Big Sig]

Ok so I never said why. It runs smoother, should give a bit more power but I doubt anyone would notice that. Do I use it? No! It's too expensive

[stampede]

Not really necessary on a standard NA car.

If someone is mapped for a bigger ignition advance they'll be wanting to use it especially if they have a turbo

[Big Sig]

Not really necessary on a standard NA car.
If someone is mapped for a bigger ignition advance they'll be wanting to use it especially if they have a turbo

That depends on the manufacturers recommendations. My old 328i was supposed to be 97 ron.

[byebyeitsagsi]

I used to only run mine on v-power, ultimate or super unleaded BUT the rising prices have put an end to that. I noticed that car performed slightly better and if prices were reasonable i would start using it again.

[m8internet]

All the VX petrol engines will run on standard petrol
The "premium" petrol require that you purchase and use it consistently
The only other cars that MUST use a higher RON are those that specify it from the manufacturer, and the Vectra is not one of these

[crespo]

http://www.youtube.com/watch?v=dDHwCWdrtdg This video should answer any questions for you.

[byebyeitsagsi]

So shell v-power is best for the high performance cars, ill still not start using it again till its cheaper though lol.

[Caveman_nige]

i do not see it getting cheaper though..... the curve just goes up...