I’m sure this has been asked many times, but I was thinking about oil viscosity recommendations vs. what’s really best for your car. In the old days, which for me are the 1970s and cars from the 1960s ...

One of the last noises you want to hear from under the hood of your car is a knocking sound. If you're familiar with engine knocks, you might immediately imagine having to pay thousands of dollars to ...

Q. You have written about the diesel-type noise found in gasoline engines called piston slap but I don’t recall you writing about the cause. Also, would a certain type of oil help this condition? D.S.

KNOCK, knock, knock, knock. No it's not the neighbour at the door. It's the disturbing sound of piston slap coming from your car or truck's engine. Is it a problem? Maybe -- it depends on whom you ...