Is optimax the only 98 octane fuel available over east or can you bp ultimate
98. BP over here claim they use no airomatics in there 98.Apperently oz
standards say they must use less than one percent. We can't get 96 octane super
here only what they call 96 octane lead replacement which is full of toluene ( I
reckon they use up to 30 percent at times just by smelling it ). Anyone using
this in boosted cars without hardened seats be warned as the lead replacement is
only good for about 600 C after this you valves hammer your seats to death. An
addative containing sodium oxide such as the redline product as this protects
better than the phosphorous used by the fuel companies.I would use this even
with hardened seats. The new 98 octane fuels require an addative aswell when
used with pre 86 cars but i would use an addative on any car where prolonged
high load conditions apply.
Andrew Smith
Terry Rudd wrote:
> Mick,
> Optimax at 98 ron compares very well with Super which is 96 ron. It seems to
> be less prone to detonation than any pump fuel I've had in mine for a while
> and performs better than Super with 104+ in the tank and it's cheaper and
> it's got a funny smell when burnt - sort of sweet sickly quite different to
> the rotten egg smell from Ulp & Pulp. For normal street use I don't see much
> advantage over Super but on the weekend it's worth a tank for some fun when
> doing a few more revs.
>
> I've sent in a rfi to Shell Aus on this rubber issue and I'll fwd to the
> list any reply.
>
> regards
>
> Terry
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Mick Ralph
> Sent: Friday, 25 November 1994 1:10 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Optimax eating rubber fuel lines
>
> Brad
> Is the "rubber" they make fuel lines out of a synthetic?
> I have "rubber" lines going from the fuel tank to the fuel pumps (in the
> boot) and to connect the webers and I'm not sure about whats inside my fuel
> pumps but i guess they have some sort of rubber diaphrams. I bought it as
> 'Fuel Hose' and it looks like black rubber to me.
> How does optimax compare to the leaded petrol I am currently using?
> what do u reckon? And why are u up so late??
> cheers
> Mick
> ----- Original Message -----
> From: Brad HALLETT <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, October 24, 2000 11:43 PM
> Subject: RE: Optimax eating rubber fuel lines
>
> > Mick
> > Optimax gives great gains in performance and economy over regular
> unleaded,
> > but will eat natural rubber. Synthetic rubber hoses and gaskets will
> > survive. Still not as good as Avgas but comes close and much cheaper
> >
> > Regards
> > Brad HALLETT
> > http://www.powerup.com.au/~bhallett
> >
> > Proudly Endorsing:
> > ...DATRATS...
> > http://203.33.35.34
> > Datsun Dedicated
> > For Nissan Motorsport Components
> > Professional Budget Priced competition equipment
> > Contact Errol SMITH
> > email: [EMAIL PROTECTED]
> >
> >
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Mick Ralph
> > Sent: Thursday, November 24, 1994 11:14 PM
> > To: [EMAIL PROTECTED]
> > Subject: Re: Optimax eating rubber fuel lines
> >
> >
> > Hi trev
> > Good to hear you are going so well on the track lately.. Makes all the
> hard
> > work and $$$ seem worthwhile huh?
> > Whats this about Optimax eating rubber parts?
> > Is there fact in this?
> > I was contemplating using it myself but...
> > Did u get any better performance or efficiency with it?
> > have u had any problems with it?
> > cheers
> > Mick
> >
> >
> >
> > riginal Message -----
> > From: Pooley, Trevor <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Tuesday, October 10, 2000 2:12 PM
> > Subject: RE: Optimax eating rubber fuel lines
> >
> >
> > > Brad,
> > >
> > > What the hell have you been doing with Optimax and ribbed condoms. On
> > second
> > > thoughts don't tell me.
> > >
> > > Fuel useage in my race car is half a litre a minute at the moment so Elf
> > > Racing fuel at $5 a litre would make for expensive racing. I'll stick
> with
> > > optimax.
> > >
> > > Trev
> > >
> > > -----Original Message-----
> > > From: Brad HALLETT [mailto:[EMAIL PROTECTED]]
> > > Sent: Tuesday, 10 October 2000 1:35
> > > To: [EMAIL PROTECTED]
> > > Subject: RE: Optimax eating rubber fuel lines
> > >
> > >
> > > I haven't got access to my old lab equipment, and my current employer
> > won't
> > > let me use the Scientific section for petrochemical research, however I
> > have
> > > found three things:
> > >
> > > 1)Optimax is bloody good cleaning solvent
> > > 2)Optimax will destroy rubber seals, hoses and ribbed condoms
> > > 3)Elf Racing fuel is about $5 a litre
> > >
> > > Regards
> > > Brad HALLETT
> > > http://www.powerup.com.au/~bhallett
> > >
> > > Proudly Endorsing:
> > > ...DATRATS...
> > > http://203.33.35.34
> > > Datsun Dedicated
> > > For Nissan Motorsport Components
> > > Professional Budget Priced competition equipment
> > > Contact Errol SMITH
> > > email: [EMAIL PROTECTED]
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: [EMAIL PROTECTED]
> > > [mailto:[EMAIL PROTECTED]]On Behalf Of Craig Overend
> > > Sent: Tuesday, October 10, 2000 12:49 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: Optimax eating rubber fuel lines
> > >
> > >
> > > Because of the elimination of lead from fuels, the oil companys have to
> > > use a substitute. Aromatics such as benzol, toluene, xylene are used as
> > > a replacement. Aromatic fuel blends act as a solvent with rubber parts
> > > and require the use of synthetic rubber for fuel hose. Therefore if you
> > > wish to run Optimax or Unleaded it is necessary to use synthetic-rubber
> > > fuel lines and replace any rubber seals in fuel pumps or carbies etc
> > > likely to cause problems.
> > >
> > > I have heard recently of people having problems running Optimax. Just
> > > this weekend at a rally I was helping with servicing. One of the cars
> > > was running Optimax with old lines developed a fuel blockage in a 45mm
> > > Weber. Didn't think of it at the time but i'll have to mention it to the
> > > owner as a possible cause.
> > >
> > > I learnt a lot of this information from an Aerospace book written in
> > > 1963 talking about fuels used in World War II so it aint new!
> > >
> > > Craig.
> > >
> > > Brad HALLETT wrote:
> > > >
> > > > Mmmmmm I'll have to take my turbo 4wd
> > > >
> > > > (Turbo 4wd diesel ute that is)
> > > >
> > > > On a more serious note, I was talking to a bloke today from Western Oz
> > who
> > > > told me that during the testing of Optimax fuel over there, they had
> > > > repeated problems with it eating fuel lines and causing fires. I am
> > using
> > > > Optimax and I think it is great, but perhaps we should all use a bit
> of
> > > > caution and check our lines regularly
> > > >
> > > > P.S. Cameron isn't it time your old man bought a dyno?
> > > >
> > > > Regards
> > > > Brad HALLETT
> > > > http://www.powerup.com.au/~bhallett
> > > >
> > > > Proudly Endorsing:
> > > > ...DATRATS...
> > > > http://203.33.35.34
> > > > Datsun Dedicated
> > > > For Nissan Motorsport Components
> > > > Professional Budget Priced competition equipment
> > > > Contact Errol SMITH
> > > > email: [EMAIL PROTECTED]
> > > >
> > >
> > >
> > >
> > >
> >
> >
> >
>
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