For more than a decade, automatic engine start/stop systems were sold as painless climate tech, a clever way to trim fuel use by cutting the engine at every red light. Now the feature is rapidly ...

Besides preventing the build-up of nasty engine sludge and premature wear, protection against cold starts is one of the main reasons why you should never skip an oil change in your gasoline or diesel ...

It may seem obvious, but fill the engine's crankcase with the right amount of oil, usually four to five quarts, and make sure the filter is full of oil. If you've purchased an assembled motor, check ...