THE AMERICAN SOCIETY FOR TESTING AND MATERIALS

THE AMERICAN SOCIETY FOR TESTING and Materials (ASTM) has reintroduced the 91/98 octane fuel specification for general aviation aircraft. According to the EAA, which is a key player in the search for a non-leaded fuel to replace 100LL (low lead) aviation gasoline, in 1968 ASTM shelved the 91/98...

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