Ethanol-blend fuel is slightly cheaper and can give you some performance benefits - so, should you be using it?

WASHINGTON -- For months, sky-high gas prices have bedeviled Americans. The nationwide average price for a gallon of gas stands just under an eye-popping $5 per gallon, AAA data shows. But a ...

The problem today is we don’t know whether to smile or frown. The reason is gas and food prices have been moving in opposite directions.

TOP TIER™ gas is gasoline (and also diesel fuel when applicable) that has been certified to meet specific performance standards. A group of automakers — Volkswagen, Toyota, Honda, General Motors, BMW, ...

Diesel and gasoline engines might look alike under the hood, but they use oil in very different ways. Gas engines run cleaner, but diesels create much more soot, crank out higher compression forces, ...

Your car's engine needs a very specific diet of air and fuel to do its job, and it's the fuel pressure regulator's (FPR) job to feed it the right amount. The gadget is relatively tiny and can fit in ...