Best petrol for 3.0R Spec B

Posts specific to the 3.0 litre NA H6 engine

Best petrol for 3.0R Spec B

Postby Lee2 » Sun Jan 14, 2018 6:36 pm

Hey guys, just interested in opinions from other 3.0R SpecB drivers out there. Which octane 95/98 and brand of petrol delivers the best performance in your experience? Any feedback would be much appreciated. Thanks guys.
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Re: Best petrol for 3.0R Spec B

Postby BillyCorgi » Sun Jan 14, 2018 7:50 pm

Lee2 wrote:Hey guys, just interested in opinions from other 3.0R SpecB drivers out there. Which octane 95/98 and brand of petrol delivers the best performance in your experience? Any feedback would be much appreciated. Thanks guys.


In before anyone else......
E85 on a flex fuel tune.
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Re: Best petrol for 3.0R Spec B

Postby NewbieSubieDude » Thu Jan 18, 2018 11:50 am

BillyCorgi wrote:
Lee2 wrote:Hey guys, just interested in opinions from other 3.0R SpecB drivers out there. Which octane 95/98 and brand of petrol delivers the best performance in your experience? Any feedback would be much appreciated. Thanks guys.


In before anyone else......
E85 on a flex fuel tune.


Does the E10 fuel go alright as well?
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Re: Best petrol for 3.0R Spec B

Postby BillyCorgi » Thu Jan 18, 2018 1:22 pm

NewbieSubieDude wrote:Does the E10 fuel go alright as well?


Maybe you try it and post up here how it goes?
Get your Short Shift Adaptor viewtopic.php?f=68&t=30525
Get your Gear Shift Rejuvenation Kit viewtopic.php?f=68&t=31240
Get your Centre Differential Rebuild viewtopic.php?f=6&t=31089
Want a custom built Brake Cylinder Stopper? viewtopic.php?f=6&t=31321
Need to hire a Guard Rolling Machine? viewtopic.php?f=6&t=31899
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Re: Best petrol for 3.0R Spec B

Postby NewbieSubieDude » Thu Jan 18, 2018 1:44 pm

Maybe you try it and post up here how it goes?[/quote]

I'll give it a go and let you know then!
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Re: Best petrol for 3.0R Spec B

Postby BillyCorgi » Thu Jan 18, 2018 1:49 pm

NewbieSubieDude wrote:I'll give it a go and let you know then!


Please don't.
RON is not high enough for standard tune
Get your Short Shift Adaptor viewtopic.php?f=68&t=30525
Get your Gear Shift Rejuvenation Kit viewtopic.php?f=68&t=31240
Get your Centre Differential Rebuild viewtopic.php?f=6&t=31089
Want a custom built Brake Cylinder Stopper? viewtopic.php?f=6&t=31321
Need to hire a Guard Rolling Machine? viewtopic.php?f=6&t=31899
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Re: Best petrol for 3.0R Spec B

Postby NewbieSubieDude » Thu Jan 18, 2018 10:08 pm

I checked this arvo. I know now. Thanks for the advice :lol:
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Re: Best petrol for 3.0R Spec B

Postby jp928 » Fri Jan 19, 2018 4:49 pm

From experience of mates car, 98 gives better mpg , especially on a cruise (always true I guess). Consistently get low 8 l/100km on 98, same as on my gtb 6mt.
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Re: Best petrol for 3.0R Spec B

Postby tom_kauf » Thu Jan 25, 2018 6:47 pm

If your car isn't tuned for a higher octane fuel, then 95 will be all you need (98 won't make a difference on a car that isn't tuned to take advantage of it).

Shell is the only one that I've seen (at least in my area) that consistently sells 95. Most others seem to do normal ULP, and then their Premium being 98.

Of the 98 options, a lot of people on here incl me like BP Ultimate. It seems to be very consistent and good quality.

But I'm not sure how that relates to fuel economy, or if 98 would get you better mpg. My driving isn't consistent enough to have been able to measure that.
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Re: Best petrol for 3.0R Spec B

Postby b3nzor » Mon Feb 12, 2018 10:54 am

I had a 3.0 R Spec.B and would only run 98, it does make a difference to economy on a trip, but around town might be hard to notice. I had mine tuned for 98 and went from peak 180 KW to 192 and peak 300nm torque to 340 with absolutely no mods. The low down torque increase made it much nicer to drive around town.
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Re: Best petrol for 3.0R Spec B

Postby Tradewind » Wed Feb 14, 2018 7:49 pm

Use 95 at the very least
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