New Optimax Extreme and which fuel best for Jazz

[redliner]

Running with bp ultimate 600km daily driving.. other fuel 500 or less.

optimax has additives to put it up to 98RON

[Tofu]

We don't get caltex 98 here in QLD
optimax is not pure 98RON, just likst redliner said, additives are added to make it to 98ron

i always use Ultimate

Optimax Extreme is stupid, the power gain is hardly noticeable, crap milage and costs more...

[BBC03]

so you guys reckon bp ultimate is the best for mileage? i've always use optimax...but occasionally i use bp n can feel that the engine is more stable and less noisy but never really notice bout the mile age.... since my jazz is for daily use does ultimate really improve the mileage?

[Tofu]

ultimate is cheaper and cleaner...i don't smell the exhuast fumes as much with BP Ultimate
why even use optimax?

[Da1nONLY]

Well in my Type R...
Optimax gives me much more mileage compared to ultimate or Synergy.
Optimax i average 500km (city and highway driving)
Ultimate i average 430km (city and highway driving)
Synergy i average 450km (city and highway driving)

and Optimax is 98RON.

[ACE888]

I've tested Shell Optimax, BP Ultimate and Mobil 8000 to as close as ideal conditions as practical (ie. Firstly, I put a full tank of one, reseted the meter, then when the tank was empty, I poured another tank of the same fuel. Then it was tested over two full tanks. I then did this with the next type. Secondly, I drove as consistently as I did, and much the same route for 6 weeks. This includes seeing my gf every second day and only driving at the same times).

From this, I found that BP Ultimate came on top in terms of performance and smoother. Ie. It feels quite quick the throttle response compared to the others, where I felt a bit laggy.

In terms of economy, Optimax came on top but no greater than 0.2L per 100km. However I found that the car tends to be less stable than Ultimate or Mobil 8000.

I'd personally rate BP Ultimate, and Optimax and Mobil 8000 as equal.

However, given the $$$ factor. I pour on normal unleaded most of the time..... with the good stuff once a month.

[LSD GD3]

Update:
Shell V'power ??
Shell V'Power Racing??
Anyone Used it in a Jazz?
i am useing V'power for the 1st time and i think it Suck... (filled up at Westryde Shell) not so good. no Power feel no rev feel should have just use normal fuel would have same feel.

[aaronng]

The Jazz is designed for 91 octane. So going for 98 won't give you any performance gain. All you will get is the cleaning effect of the extra detergents used in premium fuel.

[LSD GD3]

The Jazz is designed for 91 octane. So going for 98 won't give you any performance gain. All you will get is the cleaning effect of the extra detergents used in premium fuel.

but i normally use Vortex98 and is alot of differece in power and rev for my jazz.

[iaquinta]

I'm pretty sure that it's just your mentality. From my experience, there was no difference in power by using higher octane fuel in the jazz. In fact, the only time you might really get a hp difference is when the ecu is tuned for it... like for example, s2000, rx7/8, evo series and wrx sti.

However, you will get better fuel efficiency and a cleaner engine as previously stated.

[QuintessentiaLs]

You guys realise you can't test a brand out with just trying out one tank full. You have to use it at least three times in a row to see it's full effect. I personally recommend BP, but Shell is much more convenient, it's more common. BP I have to go out of my way to fill up. So much hassle.

[aaronng]

You guys realise you can't test a brand out with just trying out one tank full. You have to use it at least three times in a row to see it's full effect. I personally recommend BP, but Shell is much more convenient, it's more common. BP I have to go out of my way to fill up. So much hassle.

True true. If you are in Sydney or Melb, then Vortex98 is a good alternative to Ultimate, and you get 4 cents off from shopping at safeway/woolies too.