What petrol you use for your Euro?

[aaronng]

anyone notice that with 95, the engine is rougher? not as smooth as with 98?

I noticed the same thing, except for Shell Optimax. LOL

[aaronng]

i've also said this before and i will say it now, i dont know why the fark they say 98 has gives u better fuel economy than 95 or 91, i refuse to believe it since i've seen on my civic when i ALWAYS got atleast 50kms more out of 91 than 95 or 98.
i also get the same thing on my accord which is a SOHC Vtec, driving conditions are always constant, and i get more kms with 91 than 95 or 98, so this is 2 cars i seen that has totally disapproved the idea that higher octane fuel works out cheaper in the end cause for me it means paying more for each litre and getting less kms...

It could be that Australia's 95 octane is just passing 95 octane. The Euro needs 95 under normal driving conditions. If you drive it under load like going uphill, then the octane requirement increases. When using 95, if the preignition occurs, the engine runs richer, retards cam timing and ignition timing to compensate. When that happens, you get higher fuel consumption. I think this is why you see 98 giving better fuel economy on the Euro but not on other cars that require 91 octane.

[prae]

BP Ultimate, 98 RON here

~5000km 06 Euro, ~9.6L/100km all city driving

[tony1234]

I noticed the same thing, except for Shell Optimax. LOL

Optimax

[tony1234]

I use 100 sometimes

Do u notice any diff with 100 as opposed to 98?

[euro77]

lol
you dyno on the same day same temp same weight?

lol
well I've driven long enough with 98 to know the difference straight away when switching to 95, which I don't feel.

anyone notice that with 95, the engine is rougher? not as smooth as with 98?

No, I don't think it's rougher, well at least I couldn't notice it.

[BusterSonic12]

been with optimax since new car, now v power so still shell's 98. so i have no idea what other fuel be like shell saves 4c + it's close to where i live.

[Cranial]

I've been using 98 (from different companies) from day 1 of my car. Then last week, my bro borrowed it and filled her up with Shell 95. I personally could not feel any smoothness or performance difference between 95 and 98 (fuel consumption has not been measured though).

BP Ultimate feels smoothest to me, but not a big difference between the others, and as always, it depends which is CHEAPEST! hehe

[BiLL|z0r]

I use BP 95RON. Sometimes 98RON but can't notice any difference in power or fuel consumption. 98RON may seem a little smoother sometimes but that could be in my head. Not worth the extra money IMO.

[mj3610]

I use BP 95RON. Sometimes 98RON but can't notice any difference in power or fuel consumption. 98RON may seem a little smoother sometimes but that could be in my head. Not worth the extra money IMO.

this "smoother engine" business in all in ur heads...

[tron07]

I tried vpower for 4 full tanks then switch back to normal 98 and straight away feel the power lost and the car felt sluggish... but then could not afford vpower all the time and the car is not a honda then.

Anyway put in full tank of vortex98 today... pump until it stop, then pump somemore until it stop again, and still no $50 yet... I thought its full already and didnt want the fuel to leak out... The fuel warning light already blinking when I pump petrol so I thought wow, so little fuel only, and then paid for it.

When I start, its only 3/4 tank full..... the mouth of the tank must be very narrow.

[aaronng]

^^ It's the pump's fault. Go to another station or use another pump.