With a price difference of 24.4 cents between regular and premium gasoline on national average, many people are left wondering if they can save at the pump by filling up their gas tank with ...

Dear Doctor: I own a 2005 Ford Freestar that I purchased with 11,000 miles, and it has always run fine. I recently took it on a 700-mile trip. At highway speeds the engine developed an engine ping. I ...

The demon of engine knock is something an owner of a traditional high-performance Pontiac knows all too well. An engine designed when 102-octane high test was at almost every fuel station in the ...

Senior Editor Mike Allen answers readers' car questions. Q: I backed my truck in to a white steel post (right rear quarter panel). It didnt really dent or scratch the truck, but it left about a foot ...

Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced power, and potential engine damage. Key causes include low-octane fuel, ...