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Pontiac of the Month

PontiacStrong65's 1965 Tempest Station Wagon

2023 November
of the Month

What octane do you use in your Pontiac?


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87 in the Grand Prix and 89 in the Phoenix. Anything less in the Phoenix and it will auto ignite when I turn the car off and keep running for a few seconds.

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Sta-bil has a new ethanol treatment for older engines. In addition they have 104+ octane boost. I use 87 and 104 once a month in the GTO (as its system cleaner as well.) 93 is manditory for the Sunbird.

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