The price of 87 octane here is presently about $2.50 a gallon ... turbocharged EcoBoost engine on the most severe EPA regulated cycle (US06). But that high-speed cycle makes up less than 20 ...

A higher octane rating indicates greater resistance ... is usually detected and addressed within one or two combustion cycles and poses no threat to the engine. —ET ...

Higher octane fuel costs more because the fuel components that boost octane are generally more expensive to produce. Need a break? Play the USA TODAY Daily Crossword Puzzle. Development work on ...

Called the B6.7 Octane, Cummins' first gas engine is a turbocharged 6.7-liter inline-six that runs on 87-octane gasoline. Output ranges from 200 horsepower and 600 pound-feet of torque to 300 hp ...