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 ...

Q. I own a 2006 Ford Escape V-6 that has suddenly developed an engine pinging noise. I have switched brands of gasoline; this hasn’t helped. The owner’s manual specifies using 87 octane, but when I ...

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 ...

Question: Being one of those who marvels every time I turn the switch and the car starts, I would like to know why some vehicles need higher-octane gasoline. Jeffrey Tom: The simple answer is to stop ...

I have a 1985 Camry that has been a terrific car for me thus far. It's "pinged" for as long as I can remember, and a co-worker suggested that I should try a tank of higher-octane gas. Well this ...

My first experience with the term “detonation” came from an Air Force training film. It opened with a shot of a B-25 (it was an old film) that was taking off, but apparently ran into trouble because ...

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 ...