SHELL optimax VS BP ultimate FUEL ! For DOHC VTEC

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Originally Posted by aaronng

Well, try out every fuel at least once. If you have tried BP Ultimate, Vpower and Mobil 8000, give Vortex98 a go if they sell it in your area.

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wouldn't doing so not give you a true representation of what the fuel can do for your car?

I was always under the impression that the best way to test the fuel's capabilities would be to run as high a percentage of the said fuel as possible. this would mean that if I want to test Fuel B, I need to make sure that I top up Fuel B whilst I have as little as Fuel A left as possible, and then proceed to top up Fuel B for the next few rounds to dilute and reduce the proportion of Fuel A out.

or maybe you're just "sampling" the goods before you give it a test run? :p

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Originally Posted by terryansimon

wouldn't doing so not give you a true representation of what the fuel can do for your car?

I was always under the impression that the best way to test the fuel's capabilities would be to run as high a percentage of the said fuel as possible. this would mean that if I want to test Fuel B, I need to make sure that I top up Fuel B whilst I have as little as Fuel A left as possible, and then proceed to top up Fuel B for the next few rounds to dilute and reduce the proportion of Fuel A out.

or maybe you're just "sampling" the goods before you give it a test run? :p

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I meant to try each fuel, full tank each time and use the same brand for at least 2 full tanks.

oh I see.

so I was right as well! yay. (=

Was there ever a conclusion on this thread?

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Originally Posted by xenonkuraz

what's the best petrol for km's and performance? between BP Ultimate, Shell V-Power and Mobil Synergy?

Thanks.

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i reckon BP ultimate

i reckon bp ultimate or mobil s8000

Anyone know how the Safeway premium unleaded 98octane (what was the name again?) compares with the others?

Safeway is Caltex pretty much - use your dockets at Caltex. I think their Vortex 98 stuff is okay, its not my first choice - Shell is sually my best bet

but if i'm desperate for petrol and caltex is there, i'll stop and get some. heck i had to fill up some Boost98 from United the other day, the car felt crap for the $10 of petrol i put in.....i think there was ethanol in it. i wouldnt have got it, but the fuel light was on, and i was in the middle of nowhere.....

This is a huge thread, but to keep all the information in a central place on here, check out the MoTeC fuel test.

http://www.motec.com.au/fueltest/index.htm

Along with the fith gear test posted pages back and the test at Bathurst some one was referring too.. the shell fuel (Shell V-Power racing in this case) came out tops.

V8 supercars use shell V-Power racing as the control fuel (in the same guise as you can get it at the pump.) Ferrari's F1 team use it (they add some stuff to it though).. and i use it. I think it's good stuff.

Helps to cure det in crazy stressed tunes too. :thumbsup:

in terms of kilometres, i find caltex 98 to be one of the best for me. get about 500 kays with vtec here and there, shifting at about 4.5k rpm

i found Vortex 98 is better than Ultimate for sum reason....

everytime i use ultimate i felt that my car become lack of power and heavier... and sumtimes missfiring... althought it gives me better KM's than other..

I like the Vortex in my EH and GTi to be honest. The EH just needs leaded octane levels (close to 98) and the Vortex can be shopper docketed for cheapies. In the GTi I see a bit of drop in economy - the SiR hated it though. Had to go ultimate or synergy in it.