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 ...

Q: I have a couple of friends: one swears by oil additives – especially the brand Lucas – and another claims an oil additive ruined his truck engine. What is your take on oil additives? A: Some oil ...

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 ...

High-mileage oil is loaded with advanced additives intended to solve specific problems for high-mileage engines. You should ...

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 ...

Regardless of whether it burns gasoline or diesel, your internal combustion engine works by igniting a mixture of fuel and air to create power. To do so effectively, it must reduce the detrimental ...