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This may seem a stupid question but I am wondering if I need to strictly use 95 RON (PULP) if my fuel cap says I should be using this? I have been putting in 91 since I got the car a month ago but have realised maybe I should be using 95.
Also can I mix the 2 types if I start using 95 or should I try and use most of the 91 up then fill up with 95?
Sorry if this has already been discussed but I couldn't find anything on the topic.
use 98 dude.. bp 98 ultimate
No probs with mixing. Personally, I would mix the 91 with 98 for the first tank or two and then switch to 95. Personally, I don't really see the point in 98 fuel for an everyday car... if I started to mod my CL9, that would be a different story :)Quote:
Originally Posted by droninglocust
As above use 98,your car will love you for it!Quote:
Originally Posted by konektado
Agreed with all the 98'ers.
When I bought my CL9, the dealer guy had put that 10% ethanol garbage into it. After running on 98, though, to go back to anything less would be comparatively sluggish.
I am truly sorrowful towards the Americans, though, with their terrible fuel octane levels.
They have different labellings of fuelQuote:
Originally Posted by Rev
They use AKI (something about resistance to knock index)
And their 87 is equivalent to our 91
98 ron only . I would not go near 91 ron it is rubbish. You will get better kys per litre if you use 98 & more power- it is a cleaner fuel & better for you car.
use 95ron petrol or higher
Pfft. Around the same L/100km here with 95 as 98. That said, only a 3c/L difference, so perhaps the additives are worth it? Car is tuned for 95 though.
I've only used 98 in mine so YMMV, I have no benchmark to compare to for economy or smoothnesss/power. But I typically get 9.3L/100km around town, best I've done on the open road is 7.0L/100km. This is with a 6MT. I've heard a number of forum users say they notice no economy difference between 95 and 98.
Ethanol has lower energy per volume than petrol, so E10 has less energy than pure petrol and will give worse economy. However, ethanol is an octane booster, so can give better torque/power. V8 supercars run E85. 95 and 98 are both petrol and should have pretty much identical energy per volume, so shouldn't give very different economy figures. Car is tuned for 95, but 98 should have better resistance to knocking. The car has a knock sensor, so theoretically could be better under hard acceleration. Under normal driving conditions, there should be no difference.
I only use BP Ultimate 98 - it apparently contains additives for cleaning and preventing engine deposit build up, a friction reducer, and corrosion inhibitor. It certainly seems to burn clean, I have absolutely no dust at all on the exhaust of my car. So this does give me confidence that it will work long term and keep the engine relatively clean. You see some Euros around with exhaust tips black with exhaust dust, you have to wonder what fuel they are running, probably 91 E10... And if there is a performance and economy benefit, it may come from the friction reduction additives in 98 RON.
- J