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 ...

These cleaners, boosters and treatments are often sold alongside NGEN oils, especially in “pre-MOT” bundles and service packages for UK garages. The big question is whether they genuinely save money – ...

If you want your 1974 Maserati Bora to last, use the best oil additive you can find. Photo credit: David Traver Adolphus / AutoGuide.com. Most drivers know that regular oil changes are necessary to ...

John Paul, AAA Northeast's Car Doctor, answers a question from a reader curious about using Marvel Mystery Oil. AP Photo/David Zalubowski ...

It doesn't matter if you have a hybrid or conventional gas-powered car, a good motor oil can make the difference between a long-lasting engine and a sputtery ride. Here's what you should look for when ...