If you've ever bought a quart of motor oil for your vehicle, you've likely encountered the letters API somewhere on the label. In fairness, there are a lot of abbreviations, symbols and odd number ...

It’s an advanced, next-generation engine oil standard focusing on ultra-low viscosity oils for modern engines. When purchasing oil, look for the API Service Symbol "Donut" on the label, which is an ...

Changing your car's oil is a great feeling, right? You save money, you feel self-reliant, and you get to look at the black goop you just drained and think, "Yep, that did some serious work in there." ...