BP AND OPIMAX

[Guest Scootre]

Great thread!

I have been using BP Ultimate and Optimax for the last 20,000k's

Both give me a mid range flat spot - sort of. It's hard to describe.

The weather makes a difference as well. Bring on the cold.

I will try the Mobil Synergy and see how it goes. Now where is the Mobil aroung Hurstville?

You're not talking about the 2000,rpm change intorque as the turbo kicks in, are you?

[Blown BA]

I just dont know anymore :banghead:

[aps]

I cant tell you how bad the B* premium fuel is in Victoria, Its amazing nearly every time we are struggling with a lower than expected power from an engine

Funny you should say that.

In the 3 months I've had my T, I've put two tanks of Mobil 8000 and one of the BP. The rest has been Optimax. And the only reason for not using Optimax the whole time was availability.

The Mobil performed fine. I can't say I noticed any difference between it and the Optimax.

The BP? I gotta tell you the car performed like a dog. No guts at take off, poor city performance. I may as well have been using BP Zoom mower fuel. Never again.

Well that's excactly what we have experienced with the B* premium fuel.

Drain the fuel and refill with either Optimax or Mobil 98 ron premium and then give the engine a good run on the dyno for 100kms and then dyno test the engine.The engine sounds and feels crisper (even free revving) and we have measured up to a 10 kW improvement in power.

Bottom line........Find what fuel works well for your T, in your state and stick with it. :lol:

As I said earlier I would walk before I'd fill any of my car's with B* premium fuel.

Peter

APS

[TURBO4LT]

I have to agree about B****** premium, it makes my car run pretty poor with a flat spot at about 2300rpm. I dont have Syn8000 available here so I just stick to Optimax which is mandatory with my upgrade kit.

[MattB]

Guys, Optimax *IS* BP Ultimate or vice versa, depends on whether your state has a BP refinery, or a Shell one.

So for VIC, NSW, ACT they are both from Shell, in QLD/WA it's BP.

I don't know if each adds anything beyond the refinery but the fuel is generaly the same - any difference you feel could be purely mental, or your particular servo is dodgy or something.

It's funny you should mention that because I remember sticking Optimax in the Magna a couple of years back (don't laugh...it does get better mileage on the long trips) up in QLD at Warwick. Usually I'd get about 600-700kms out of a tank depending on whether I had the air con on or not, but this one time from this one station, I got about 1000kms from their Optimax. Thought that was great but the engine made a different noise, so thought it must've been running too lean so steered clear of it there ever since.

[aps]

Guys, Optimax *IS* BP Ultimate or vice versa, depends on whether your state has a BP refinery, or a Shell one.

So for VIC, NSW, ACT they are both from Shell, in QLD/WA it's BP.

I don't know if each adds anything beyond the refinery but the fuel is generaly the same - any difference you feel could be purely mental, or your particular servo is dodgy or something.

Well that is simply amazing. I guess each company must blend their own additives to the base fuel as the performance difference that we have seen and measured between the 2 brands of fuel is significant. I would walk before I put B* ultimate in my GT3 or twin turbo Porsche.

Peter

APS

It's funny you should say this as one of my friends has just had a survey completed for placer domer and found by independent laboratory testing that BP fuels and oils where the purest cleanest of all the samples taken and supplied to the company by the respective companies.

Also I have problems with my T stalling, hunting, rough idle all disappeared when I started using BP fuel exclusively (Not BP Ultimate). My friends XR8 was a totally different car to drive and got better fuel economy on the highway an extra 100 clicks I was amazed the difference BP Ultimate made.

Also my boss has just taken ownership of his highly modified R33 GTR and made a friendly call to the shell rep for a couple of drums of optimax as it is not available here. The response from the shell rep was that he could organise it and upon querying him on the difference between Optimax and BP Ultimate the rep explained that Optimax is actually a by product of the fuel making process and that the BP Ultimate was a better fuel go figure.

Many scenarios could happen, my experience testing of both fuels I prefer the BP although harder to get than optimax. Stating all the above I do have to concede that all the touring car use optimax, although comparing the optimax they receive and we receive is most likely chalk and cheese.

The other thing to be wary of is the servo's you are getting the fuel from. You hardly ever see the fuel going into your tank and don't have any idea if it is indeed tainted or watered down or even the premium product unfortunately all fuel is relatively the same colour. Tanks can be damaged waterlogged some people even add acetone and water to make it go further as the acetone allow the water to mix with the fuel. Water run off, seepage and vegitation the list goes on.

As I cannot get optimax or Bp ultimate I usually add Nulon pro strength octane booster to my T it provides a better throttle response and reduces pinging in the hot harsh area I live in.

Any how I think the APS kits are awesome and are glad to see that you have taken your rightful place as the fastest XR6Turbo in Australia not as zoom misrepresented the Nispro kit. Unfortunately my beloved zoom mags are now not as unbias as it used to be as they don't represent and inform buyer of what is really available these days. Nispro kit is so ugly too. What are your thoughts on the Nulon Pro strength octane booster.

The only problem with some octane boosters is that they can shorten the service life of 02 sensors and cat converters. :(

Other than this potential problem the nulon pro strength octane booster is a good option for when premium fuel is difficult to purchase in some country areas, or when the engine has a small detonation (pinging) problem for whatever reason.

If the engine continues to ping under normal daily conditions then its best to have a expert tuner look at the engine to diagnose the problem.

Peter

APS

[1axr]

I have run mine on good old west aussie bp ultimate fot over 30000 km and never had a broblem. like my drinks I never mix them.

[aps]

Guys have investigated the premium fuel issue, this info came from head office of both Mobil and Shell in Melbourne. :hiwelcome:

The shell optimax is only produced in the Shell Sydney refinery and sold in STH QLD, NSW and Victoria. :(

There is no sharing of fuels between the different oil companies at the 98 octane rating as some have suggested. They do however share 91 ron unleaded fuel.

Now to Mobil. All mobil 98 ron synergy fuel is produced in Melbourne and sold only in Vic, NSW, and south Australia. We have not spoken to BP yet, however the important issue apart from distribition is that the three brands of 98 octane fuel are each chemically unique. WE need to investigate the premium fuel in W.A as we suspect that premium there will be different to the rest of Australia. Will post more info after we have spoken to BP.

This is supported by APS's own test results as we have found that the Shell and Mobil 98 ron fuel is consistantly different to BP fuel (better in our opinion). I trust you will find this info interesting.

Peter

APS

[stang]

Guys have investigated the premium fuel issue, this info came from head office of both Mobil and Shell in Melbourne. :hiwelcome:

The shell optimax is only produced in the Shell Sydney refinery and sold in STH QLD, NSW and Victoria. :(

There is no sharing of fuels between the different oil companies at the 98 octane rating as some have suggested. They do however share 91 ron unleaded fuel.

Now to Mobil. All mobil 98 ron synergy fuel is produced in Melbourne and sold only in Vic, NSW, and south Australia. We have not spoken to BP yet, however the important issue apart from distribition is that the three brands of 98 octane fuel are each chemically unique. WE need to investigate the premium fuel in W.A as we suspect that premium there will be different to the rest of Australia. Will post more info after we have spoken to BP.

This is supported by APS's own test results as we have found that the Shell and Mobil 98 ron fuel is consistantly different to BP fuel (better in our opinion). I trust you will find this info interesting.

Peter

APS

Like they say Pete if ya want to hear it from the horses mouth.

Go to the Horse, great work mate.

regards

Stang

[TURBO4LT]

Great work Peter at least we know if we get optimax it should be pretty consistent.

:hiwelcome: