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14.7 is the required mix for the cat converter to work best. Its not the most fuel efficient mixture. Its another emissions push.14.7 isnt the wrong answer, its just not a informed answer when it comes to max economy.
14.7 is the required mix for the cat converter to work best. Its not the most fuel efficient mixture. Its another emissions push.
14.7 isnt the wrong answer, its just not a informed answer when it comes to max economy.
