What's Your Engine Oil Telling You?

Analyzing the oil in your car is like sending a sample of your blood to the lab — it reveals an astonishing amount of information about the inner workings of your engine without invasive surgery. By reading the results of the analysis, you can fine-tune the intervals between oil changes and discover problems — such as a leaking head gasket — before they cause more expensive damage.

You might even consider analyzing the oil from a car you are considering buying. Currently this is popular with airplane, boat and heavy equipment buyers, but at least one company may soon offer this ... Back to article