Yes, I've heard them boast of that "top tier" status, and as far as I can
tell it's a co-marketing gimmick with the automakers.
No 93 in CA, alas.
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
on 8/25/06 5:06 PM, mghirsch at mghirsch@netzero.net wrote:
> Max Heim wrote:
>
> Here in California there is no real difference between brands. Premium is 91
> octane across the board, with 10% ethanol (or something like that). Certain
> brands advertise like crazy how they "clean your engine" to "avoid deposits
> on your engine parts" for "better mileage" and "performance", but that is
> pretty much bunk. I run premium in my B just so the poor thing doesn't
> knock. Later low-compression motors needn't bother.
>
>
> Some car manufacturers are specifying a specific quality of gasoline. Called
> top tier, it is more than octane, it has to do with the additive packages
> and impurities.
>
> Also, in Chicago, premium is 93 octane.
>
> Maynard
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