So, you mixed synthetic oil and conventional oil. You screwed up, and now you're wondering if what you did will have catastrophic consequences. Whether it was a simple accident or if you did it on ...

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

Despite being less expensive than its competitor's synthetic offerings on Amazon, the company's self-branded oil is well-regarded among drivers. At under $25 for a five-quart bottle and with over ...

Demands on heavy-duty diesel engine oils have changed alongside engine technology and fuel formulations. “As engine technology and fuel technology have evolved, the environment in the crankcase ...