If you've ever noticed green-capped stems on tires in a parking lot and wondered why the car's owner chose them, you're not alone. It's a popular question, and one many people answer incorrectly.

Back in the early 2000s, some controversy emerged about the practice of spraying large amounts of fog directly into the compressor. Some claimed that this led to blade erosion, pitting, and scaling.

Aviation gasoline is formulated for airplanes; pump gasoline is formulated for automobiles. What does this simple statement mean to you? Well, if you plan to supply your high-octane diet by burning ...