Oh no, another octane thread...
This question is actually very simple: use the _minimum_ sufficient octane
level to avoid preignition (heard as pinging). To do otherwise will either
damage your engine (if you allow it to ping), or waste money (if you run
a higher octane than you need). Unfortunately, octane ratings are a little
like religions, and for that I blame the oil companies and their misleading
advertising campaigns.
We can also discuss different additive packages and cleaners in different
octane grades if you like, but that is more a function of good-quality vs.
poor-quality brands rather than octane rating.
> Always 93. A must if you have the SBEC installed.
Good point. There are certain engine modifications which will require you
to run higher octane to avoid pinging.
Ron
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