I am using premium exclusively in my '66 B. It has a Gold Seal motor in 18GB
spec with approx. 95K miles, and a fresh head (<10K miles). â??Premiumâ??
around here is 91 octane with 10% ethanol, so it still pings occasionally on
hills. Iâ??m running a newly reconditioned points distributor, and trying to
dial in the optimal timing.
Later models with low compression engines might very well run on regular.
--
Max Heim
'66 MGB
Sunnyvale, CA
> On Sep 20, 2023, at 8:32 AM, i erbs <eyera3000@gmail.com> wrote:
>
> I just got my B running for the first time and have a newbie question. I have
> looked online and got confusing answers.
> What grade petrol do I use? Must I use premium grade? Can I use regular?
> Thanks.
>
> Ira Erbs
> Milwaukie, OR
> 1959 Austin Healey 100-6
> 1967 MGB Roadster
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