I fully understand that the vast majority of oil additives are nearly or completely worthless in modern engines. But I've noticed that most of the discussions on this say something like "no engine ...

Under normal circumstances, most modern engine oil and gasoline brands work fine on their own to keep your engine running smoothly. But there may be cases where even the best of them could use a ...

Walk into any parts store and you'll see the rows of glossy bottles promising to stop engine wear, boost fuel economy, and make your old clunker run like it just rolled out of the factory. The auto ...