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Octane Boosters

hicas_posse
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scathing Grand Master

scathing

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Buy the highest RON rated fuel you can, rather than buying the lower-spec stuff and octane boost it. Octane booster doesn't mix in to the petrol properly, and its only ever designed as a stopgap measure.

If you've tuned your street car to use fuel with a higher RON than what you can easy get at your local petrol stations, then I'd suggest re-evaluating your requirements or purpose of your vehicle.

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hicas_posse Community Regular

hicas_posse

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Buy the highest RON rated fuel you can, rather than buying the lower-spec stuff and octane boost it. Octane booster doesn't mix in to the petrol properly, and its only ever designed as a stopgap measure.

If you've tuned your street car to use fuel with a higher RON than what you can easy get at your local petrol stations, then I'd suggest re-evaluating your requirements or purpose of your vehicle.

hi,

what you say makes sense but in this case in australia,I think most skyliners are using Optimax and that's only 98ron.. I think it's 101 in japan(i could be wrong though). And as for the new fuel made by shell which has a bit of ethanol (but has high octane rating),i'm trying to see if it makes sense to safely use optimax + octane boosters.

what are your thoughts?

thanks

rob

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djr81 Grand Master

djr81

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If your car has a stock ECU it will run fine on 98 Octane. If you want to use an ethanol blend from what I understand the fuel density is different & you need a tune.

If you have an aftermarket ECU get the engine tuned to 98 Octane.

By way on illustration - when they sold the R32 GT-R's in Oz you could only buy 95 Octane...

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scathing Grand Master

scathing

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what you say makes sense but in this case in australia,I think most skyliners are using Optimax and that's only 98ron.. I think it's 101 in japan(i could be wrong though).

Oh, a stock Skyline, or one without a programmable ECU. I hadn't considered that. :(

If the car's stock, then it should be adequate. 101RON would be top-of-the-line fuel; OEMs always design their cars for a wide range of conditions.

If its got a Mines' ECU or something that's tuned more aggressively but can't be retuned locally, I'd probably look at swapping the ECU and retuning instead. I don't like octane booster since there's no guarantee it mixes properly, so I'll avoid it where I can.

I don't think it was designed as a long term solution.

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Robo's Mentor

Robo's

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If im going out for a fast cruise with the boys, i try the Nulon Pro octane boost which brings my knock levels down. This is on top of my 98 octane fuel. However, i prefer to fill it up on Optimax Extreme which is 100 octane and brings my knock down considerable.

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  • 3 weeks later...
hicas_posse Community Regular

hicas_posse

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If im going out for a fast cruise with the boys, i try the Nulon Pro octane boost which brings my knock levels down. This is on top of my 98 octane fuel. However, i prefer to fill it up on Optimax Extreme which is 100 octane and brings my knock down considerable.

hang on... i thought with Optimax, your car shouldn't knock anymore?

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rb20inside Community Regular

rb20inside

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a higher RON is just a higher resistance to preignition (knock).

tune your car to 98RON (Ultimate, Optimax, Vortex, Synegy) and add a octane booster if you want when you venture to the track or go for a fast cruise with the boys just as an added safety factor. otherwise yeah, "re-evaluate your requirements of your vehicle"

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hicas_posse Community Regular

hicas_posse

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a higher RON is just a higher resistance to preignition (knock).

tune your car to 98RON (Ultimate, Optimax, Vortex, Synegy) and add a octane booster if you want when you venture to the track or go for a fast cruise with the boys just as an added safety factor. otherwise yeah, "re-evaluate your requirements of your vehicle"

hi,

i'm in melbourne. A few months ago,i enquired and found that Caltex has yet to have 98 ron fuel in melbourne. Seems their Vortex are 95 or something. Has anything changed?

thanks

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