sk429

I definitely feel the differences between Octane 94(Chevron supreme plus)
and other premium gas with Octane 91.

If my s2000 works better with Octane 94 gas, should I assume that premium(Octane 91) gas is not good enough?
S2000 shouldn't have any knocking and work flawlessly with Octane 91 gas, should it?

jpark

i honestly couldn't feel the difference between 91 and 94 lol, than again my car is stock.. so not sure.

And with our current gas prices, i just use 91 lol

kryptonite

Likewise. Didn't really notice any change at all apart from the fewer litres of gas in my tank

Zeus2k

You will only see a benefit if your car is knocking on 91 and the ecu is pulling timing, or if you have some form of engine management and have tuned for the extra octane. It is a common misconception that higher octane fuel makes more power on cars that don't require it. Don't waste your money.

sk429

I think I was too sensitive. I moved from the States last year and I have been using 94 Oct since then. When I happen to travel to the States I put 91 Oct and felt something awkward. Probably it is due to other things such as long distance driving.

Thanks for all the answers.

Vik2000

I use Chevron all the time and used to put 91 until they started blending ethanol. I put 94 all the time now, not to mention the price diff b/w 91 and 94 is insignificant. If the reason for you to not put in 94 is because you want to save $, you might as well skip a few unhealthy meals.

Team1!!111!!!11!

It "seems" that I get better fuel consumption with Shell 91 than Chevron 94...

alSpeed2k

^Lol, I think I get the best fuel economy using US Shell gas (92 Octane); local Shell I don't notice much of a difference compared to Chevron.

esstwothousand

i get about 50 more km on a tank of 91 vs. 94

alSpeed2k

^wow, that's quite significant and worth paying the additional 3 cents for!