Wrong Gas - Problem?

Jordo!

In the US, due to ultra strict emissions laws in California, pretty much all vehicles sold in the US that require high octane fuels are tuned to operate normally with 91 AKI.

That said, many gas stations in the rest of the US don't carry 91, but have 92, 93, and even 94 AKI.

You can even get 100 AKI at the pump in some Sunoco stations -- although it costs nearly twice as much as 93 AKI, and isn't particularly useful unless the spark map has been tuned for it... or maybe if you wanted to be extra cautious running laps at the track on a hot day in the summer.

Don't know if you are getting 95 or 98 RON or whether the label is accurate -- there's also MON, which is slightly different... so maybe 95 RON = 98 MON? Not as sure on that one...

Anyway, either 95 or 98 RON is fine, and neither should result in much (if any) of a significant difference in performance unless you are pushing it really hard in harsh conditions, in which case the higher of the two would be preferred but probably not essential.

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