87 octane fuel in the Z

AK370Z

As frost said, you should be okay. Just drive the Z. It says in the manual if you drive to an area where the highest grade is 87, you can fill the tank with it temporarily. Just try to put 93 when the tank is 1/2-1/4 full.

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What the manual says:

Use unleaded premium gasoline with an octane
rating of at least 91 AKI (Anti-Knock Index)
number (Research octane number 96).

If premium gasoline is not available, unleaded
regular gasoline with an octane rating of 87 AKI
number (Research octane number 91) may be
temporarily used, but only under the following
precautions:

. Have the fuel tank filled only partially with
unleaded regular gasoline, and fill up with
unleaded premium gasoline as soon as
possible.

. Avoid full throttle driving and abrupt acceleration.

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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.