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RE: [ST] RE:Octane



I think my manual says to use 95 ROM gas.  The pumps here in the US use a different calculation for octane that yields numbers like 87, 89 and 91.  Which of these is the correct stuff?

Rod wrote:

Octane ain't octane.  It's usually trimethyl-pentane or some other
hydrocarbon mixed with other stuff.  Like you said octane ratings were
made so you don't "explode" but burn gas.

I recommend using what the manufacturer recommends and don't worry about
it.  Don't use premium if they say 89 is OK because that actually isn't
"better" just costs more.
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