One of the oldest oil brands, Quaker State has been recognized ... It's a clean and reliable full synthetic oil that can be used in diesel and gasoline engines. Due to its reliability and ability ...

The brand offers two lines: Pro Performance conventional oil and SYN Full Synthetic oil. While STP makes excellent products that represent good value for your money, its performance-based motor ...

Let’s explain all of those confusing numbers, letters and terms to help you choose the right oil for your car.

There is no standard for synthetic oil, making "full-synthetic" a marketing term. This also means no two brands are exactly ...