I can buy 100 octane out of the pump where I live, ethanol-free. $8.99 / gallon or 91 octane for about $4.40 / gallon.
I typically do 91 octane and add a pint of boostane professional. They ship to California.
Rebuilding my engine and making it pump gas friendly is on my bucket list. In the meantime, CA gas prices bleed me.
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1965 Pontiac GTO
455/469 w/ #48 Heads, '65 Tri-Power
9.25:1 CR
Stump Puller Cam
Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00
3.55 Rear Differential
Front: 225/60R15 Height: 25.6"
Rear: 275/60R15 Height: 28"
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