It's difficult to find gas above 90 octane in Alaska, but why? As it turns out, the real reasons are surprisingly mundane and ...
DENVER — Unless you have a turbocharged engine, regular 85 octane fuel may be the most expensive gas purchase you need. But for more miles per gallon, 87 octane may be the better buy than 91 octane ...
Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...