John Paul, AAA Northeast's Car Doctor, answers a question from a reader wondering whether they need to follow the ...

In case you’re unfamiliar with octane boosters, they’re designed to improve fuel stability under high compression by increasing the octane rating of the fuel you’re getting at the pump.

Octane numbers, ethanol content and diesel get thrown in the mix, while TV commercials shout about special cleaning additives and better fuel economy. What’s a motorist to do? Is premium fuel ...