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semtex · 09-04-2009, 10:07 AM

Back on the topic of octane ratings, have you guys noticed the slight difference between US-spec Zs and Australian-spec? According to Rudi (post #18), "In the manual for the Australian version, it states: Use UNLEADED PREMIUM gasoline with an octane rating of 98 (RON)." That works out to 93.1 AKI octane, according to this: US Octane VS Other countries Octane Ratings

In the US manual, it says to use 91 octane, and even says 96 RON in brackets. It's only a 2 point difference, but I wonder if we should infer anything from it. Like maybe the engine is in fact optimized for 93 octane? *shrug*

09-04-2009, 10:07 AM	#88 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Back on the topic of octane ratings, have you guys noticed the slight difference between US-spec Zs and Australian-spec? According to Rudi (post #18), "In the manual for the Australian version, it states: Use UNLEADED PREMIUM gasoline with an octane rating of 98 (RON)." That works out to 93.1 AKI octane, according to this: US Octane VS Other countries Octane Ratings In the US manual, it says to use 91 octane, and even says 96 RON in brackets. It's only a 2 point difference, but I wonder if we should infer anything from it. Like maybe the engine is in fact optimized for 93 octane? shrug __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.