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 ...

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 ...

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 ...

Q: I own a 2008 Cadillac Escalade EXT that I love. My wife has a hard time getting into it because of the high entry level. I asked the dealer if they can lower the truck a few inches, and they said ...

Does your street-driven car ping now when it didn't use to? It may be suffering from octane creep caused by deposit buildup inside the combustion chambers. New engines on the dyno and regularly ...

It should run on 91-octane fuel without pinging; the knock sensor should ensure that it doesn't occur. Running it on higher-octane fuels makes it less prone to pinging, and again the knock sensor ...

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 ...