Gas rating number

This time we are looking on the crossword clue for: Gas rating number.
it’s A 17 letters crossword puzzle definition. See the possibilities below.

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Possible Answers: OCTANE.

Last seen on: –USA Today Crossword – Jul 10 2023
USA Today Crossword – May 29 2021
Eugene Sheffer – King Feature Syndicate Crossword – Jun 29 2019