What fuel you guys pumping in?

[FDDreamer]

Just wandering what fuel you guys are using. There\'s no Optimax (or equivalent) where i live, and i\'m wondering if regular super unleaded would be OK for use in an import, or if i would need to get some boosters etc.

I think optimax is 98.5 RON, and regular unleaded is 95 RON...doesn\'t sound like too much of a difference. anyone know what RON jap fuel is, or to put it another way, what RON the ECUs are normally set up for?

finally, do you think it makes a noticeable difference NOT to use high-spec fuel...or, contrastly, using a booster to improve regular fuel?

thanks for any input!

[J4P RX]

Optimax or super.  Never used anything else but my GTiR wouldnt even start with 95 in the tank and thats when I realised it was worth paying the extra.

[Nath]

I use Super Plus

[moakesr]

Optimax...Optimax...Optimax....and loads more Optimax.

I don\'t make any claims for performance enhancement, but the extra RON points are cheap insurance against detonation.

If no Optimax available, then BP Ultimate, and finally normal Unleaded 95, but only enough to get me to the next Shell garage.

Richard

[scooby_si]

Jap stuff is 100RON init, & best here is optimax which i understood to be 98.6 (that .1 can make all the difference )
Can always get sum octane booster if yer pushed into the lesser stuff....
Si

[yonner]

u can buy 115RON racing fuel from the us and u wont be paying tax on it

[GaryS]

I have a supply of enriched uranium from the east that I use.  It tends to foul the plugs though and makes everyone think you have underbody lighting.

[J4P RX]

US RON is different to UK RON.  It wont aqctually be that high.

Where would you get thatfrom anyway?  If it was here it would cost a fortune!

[GaryS]

Oh, o.k. that might have been a fib (err what are all those suited men now doing outside my house).

Optimax for me as a prime choice, then BP market-hype.  Not all SULs are equal - I\'ve had quite serious levels of knock before off Sainsbury\'s SUL in my other car at track days ona  number of occasions - found I did better with ordinary UL and octane booster.

[scooby_si]

lol at Gary\'s back to the future stylee fueling project :rollin
Si

[sadgoth]

If you could find fuel rated as 115RON in the states tha would be well of 120RON here as their standard pump gas is rated at 87RON (equates to about 94RON here and there super is 91RON if memory serves with is close to 97RON here. No idea why this is, apparantly it is measured differently!

Anyway you can get 76 race fuel here anything from 100RON unleaded to 106RON unleaded (which are road legal) or go stupid and 120RON leaded race fuel (not road legal)

Which reminds me on the way back from Japfest Paul Whiffin (at least I assume it was him) went past me in the Whiffbizz Supra and there was a distinct smell of race fuel!!!:D

[FDDreamer]

I see! pretty much as i feared! there\'s not a shell garage anywhere near me, would have to go into a completely diff town. scary that it can make such a difference.

I noticed ben linney is including 10 litres of 76 cool blue racing fuel (think it\'s 106 RON and road legal) with new FDs, which was why i was wondering. The stuff is about £80 for 25 litres i think. Ouch.

I\'ve read that octane boosters don\'t really work, apparently max power tested a car with a variety of fuels and boosters and noticed no difference. although i\'m not sure if the car was imported or not. anyone got any details on that, or tried boosters themselves?

[J4P RX]

Whilst you can still get it at the moment 76 have stopped producing Cool Blue AFAIK.

Lee

[FDDreamer]

oh well, they\'re still doing the 102 RON range (i think!) which would be more than enough! can\'t remember what the range is called, but i do recall seeing it on the website!

[davefrith]

Originally posted by FDDreamer

I\'ve read that octane boosters don\'t really work, apparently max power tested a car with a variety of fuels and boosters and noticed no difference. although i\'m not sure if the car was imported or not. anyone got any details on that, or tried boosters themselves?

A truly professional panel of judges then :rollin

Octanebooster may not make your car majorly faster but you can\'t argue it will run better dependant on its mapping of course

Optimax is 98 octane, BP Ultimate is 97, though the subject of degradation in the petrol station storage has been done to death

Dave