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 ...

Snake oil. Mouse milk. Whiffle dust. Take your pick — few products have earned such unflattering sobriquets as aftermarket motor-oil additives. And for the very good reason that these promised ...

Everyone thinks their job is tough, but the chemists formulating modern motor oil really earn their paychecks. As the EPA continues tightening up on emissions standards, it has forced motor oil ...