I think we should discuss what fuel is being used too. I only use ultimate which is a 98 RON. So maybe 95'ers are getting less / more?
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I think we should discuss what fuel is being used too. I only use ultimate which is a 98 RON. So maybe 95'ers are getting less / more?
It's all from what people hear and experience. The problem might not be caused by optimax alone, but we are quick to put the blame in it.
Example, my girlfriend's Astra has a sticky throttle butterfly after 3 years. Dealer says that it shouldn't happen if you're using premium fuel, but still happened to hers. For me, I'll alternate or something. Maybe fill every half tank with optimax to see if it feels ok.
Edit: I use only 98 octane.
That was a great write up by our north american friend.Quote:
Originally Posted by yfin
Do they have different octane rating system?? how come they have 89, 91 Octane level, and yet still get all the performance and fuel efficiency??
Do they have diffenrent engine set-up to cope low octane fuel? :confused:
Yes, they do have different octane rating system.Quote:
Originally Posted by PNR888
From memory, their 91 octane is the same as our 98 octane or something. It's been a while, so I'm not sure if that's 100% correct. However, I'm 100% certain from memory that their 91 octane does not equal our 91 octane.
I've never given other petrol a chance. Have always used BP Ultimate from the beginning.
Maybe I'll try the Optimax or the Vortex 98 since they have petrol discounts with supermarket receipts. worth a try I suppose.
Our octane rating is the research octane number (RON). The US uses the formula (RON+MON)/2, where MON is the motor octane number which is determined by actually running the petrol in an engine and it is a lower value than RON. So for the same sample of petrol, our system would give a higher number than in the US.
I got my first reading after my first refuel [to the top] with a brand new auto luxury.
Oi - about 350Ks out of a full BP Ultimate tank before the low fuel light came on; that equates to about 1.4l per 10Ks if this happens @ 10 litres left.
Usage: A good few short trips in the city, trying the engine out etc, plus the relatively cold weather - all in all that probably doesn't make for very good fuel economy.
After this I didn't fill the car completely up as I wasn't happy with the fuel price, so this throws followup monitoring out a bit.
aaronng: thank you for the info
That sounds extremely high even for a brand new car.Quote:
Originally Posted by Aratahu
Cold weather should actually improve the fuel consumption, not make it worse.
I don't think I ever got mine to go above 10L/100km, even when pushing the car very hard constantly, which I was very pleasantly surprised about.
The first fuelup is always high, because the dealer doesn't fill it to the top for you. My first refill was 15L/100km.
just did my first tank of fuel, till the light came on
estimated about 13L/100km very light footed, mostly highway too...
im hoping this will go down to closer to 10L/100km but we will see how we go over the next couple of months.
coladuna, you driving an auto or manual? I've not made ANY effort whatsoevery to conserve fuel, so if I tried I'm thinking I should be able to do a lot better. Well, I'll record it from next time I fill her up completely and see how it goes. Should also be able to go for a longer drive next weekend so that might be good for it.