Optimax Fuel Quality

[shonen]

since a few people have asked and no ones answered yet..

WHAT ABOUT VORTEX ???

cause i use that if i cant find Ultimate....

[LBR33]

i find vortex better then opticrap

[bigcarl]

has anyone actually tested there theories on the dyno, you like same car with opimax then with bp ultimate?

[twisted]

I have found vortex to be below par. Only 95 octane last time i checked. Caused misfiring in both my previous car (bluebird with a boosted CA18) and my current stock R32 GTST.

[FATGTS-R]

This thread is interesting to me as I fill with optimax as there is a shell 10 doors down from my house, however I do occasionally use the bp stuff if I am shopping or whatever as there is no shell there.

To be honest my car needs a damn good tune anyway but I definately get better economy from the optimax.

A couple of you guys mentioned optimax as being 92 ron fuel to begin with and then modified somehow to acheive the 98 RON whereas bp and Mobil are refined at 98 RON from the beginning.

Can one of you please supply me or post here if you wish your reference for this information. Because if the Shell issue is a concrete fact I wont touch it again.

[MSPEC]

My car has been tuned with Mobil 8000 by Ben at Race Pace and when I use Optimax it pops a lot on boost and does ping So I don’t use that crap!

[WiZardOz]

since a few people have asked and no ones answered yet..

WHAT ABOUT VORTEX ???    

cause i use that if i cant find Ultimate....

Vortex is 95 RON (min) .. just checked it out on the caltex web site

[Brody]

Here i was thinking it was just me being paranoid when the car felt different after filling up different times during the week with optimax....

I since moved to BP ultimate...feels alot smoother/consistent.

Won't be moving until bp fk theirs up

[VLRB20DET]

is there any advantages in running BP ultimate and octane booster? will it increase the octane rating or not, im thinking about only using it for when i take my car to the drags

[letemlaf]

is there any problem with mixing fuel?

when my gf takes my car out she insists on filling it with caltex vortex fuel, but i will always only put BP ultimate in.

i did find that my car's exhaust would pop while accelerating at high revs and lately it hasnt been doing that. im not sure if its the better fuel or maybe just the cooler weather

[MSPEC]

dont think its a big deal mixing fuel but if you have more crappy shell fuel then the mix obviously wont be as good.

[Guest two.06l]

is there any advantages in running BP ultimate and octane booster? will it increase the octane rating or not, im thinking about only using it for when i take my car to the drags

get the most out of your octane booster by getting it your car tuned with it in your tank

[MSPEC]

Problem with that though is without the octane booster the engine will ping at high revs. You want to tune the car with what you will be using. Like I said my car was tuned with Mobile and like most guys who have done this find their cars either run like shit with Shell or in some cases ping like mine

[Sydneykid]

Hi Guys, I think you need to check out your local supplies. Just because it says "Shell" on the servo doesn't mean that all the petrol sold there came from a Shell refinery. In Qld, WA and SA, Shell don't have 98 octane enabled refineries, so my understanding is they buy it from BP. Being Kwinana in WA and Bulwer Island in Qld. In NSW and Vic it is the reverse, the refinery at Clyde produces something like 25% of Australia's total petrol and the Geelong refinery produces about 50% of Victoria's petrol.

So my understanding is;

In Qld, WA and SA all Optimax and Ultimate is refined by BP

In NSW and Vic all Optimax and Ultimate is refined by Shell

I don't know about Caltex/Ampol, but you can find out by calling the local refinery and asking.

Bottom line, I don't think you can say that Optimax is this and Ultimate is that, it really depends on from where it is sourced.

[rs73]

guess it's all part of the marketing con.... u're buying BP being sure you get diffrent fuel from Shell, in fact BP & Shell has an arrangement to have all BP fuel done by Shell...

so what's the difference.... just go buy any fuel, it's like tax, you can't afford not to pay for it and still getting the same juice.

[Bez]

Optimax would still be better than vortex and other premiums right ?

It would just be the worst of the 98octain range ?

[Sydneykid]

Hi Bez, Taree hmmm, I would say your Optimax would most likely come from the Shell refinery at Clyde, so it is "real" Shell petrol. Any further north and you might get "Optimax" from the BP refinery at Bulwer Island, so it wouldn't be real "Shell" petrol. I have never had a problem with Optimax from Clyde. Since Clyde is the source of the V8Supercar control fuel it can obviously produce "good" Optimax.

I would say, ignore the comments from guys in other states that get their Optimax from different refineries, some of which aren't even Shell.

[Mase]

Shell doesn't guarantee the 98 octane do they like bp does?? I was under the impression there was only one refinary for optimax and that was down south (clyde). I didn't think WA had optimax and i was told by a shell operator in qld when they ran out that it was because of the refinary down south not being able to supply enough for everyone. That refinary is the sole optimax supplier to my beliefs. We've got 2 or 3 oil refinaries in brisbane. One is bp and the other was caltex and i think there maybe a 3rd which is jointly owned by neumanns and morland energy. A lot of the refinaries are getting their fuel from overseas at the moment.

[RB20LagWagon]

Shell doesnt even sell Optimax in perth as a 98 octane fuel, We only get Ultimate and Vortex (which For our engines doesnt have high enough ron).

[Bass Junky]

As far as I know, its a fact that BP Ultimate (who use the best Western Shelf Crude Oil) refine their fuel to 98 octane, where optimax is like putting a bottle of octane booster in your tank.

I have it on good authority.

I don't use the crap.

BASS OUT