Motorists wasted more than $2.1 billion dollars in the past year because they used premium-grade gasoline in vehicles designed to run on regular fuel, AAA said.
“Many drivers think they are giving their car a treat by occasionally filling up with premium-grade gasoline, even though their vehicle calls for regular unleaded,” Mark Jenkins, AAA spokesman, said in a news release. “The consensus has been that higher octane does not mean higher quality, but AAA wanted to do a formal study to test that theory.”
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