Imagine standing in front of an aisle with two bottles of oil looking down at you. Both of them claim to meet the same standards. The only difference is that one is a run-of-the-mill store brand while ...

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 ...

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 ...

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 ...

Competition in the world of business is a good thing for the consumer, right? It keeps prices down and forces innovation. Well, the motor oil space isn't as competitive as you might have thought. For ...

Add Yahoo as a preferred source to see more of our stories on Google. As engine standards change, the oil that protects them has to change too — especially for drivers buying new trucks in the next ...