Motor oil additives promise less friction, better fuel economy, more power, and longer engine life—but the testing tells a ...

When you go shopping for oil, you might encounter a Dexos certification on some brands. What does this certification actually ...

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 ...

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 ...

While everybody knows what the oil pump's job is and why it's there, few enthusiasts consider the lowly bubbler as a possible engine tuning resource. We've come to appreciate that it takes power to ...

Costco can do a pretty good job helping drivers save money, whether the company is offering a good deal on tires, or discounts on brand-new Corvettes, or a low-cost motor oil under its own house label ...

If you own a Cummins-powered vehicle, there's only one name you'll consistently hear when it comes to engine oil: Valvoline Premium Blue. The product is the only engine oil exclusively endorsed and co ...

Maybe you've seen a mechanic in a movie dab their finger in motor oil and give it a taste to diagnose a car. Does this ...

When it comes to caring for cars we cherish, it’s better to play it safe than sorry. If you’re like me, you’ve been changing your oil every six months whether you’ve done 900 miles or 5,000, wondering ...