GM Authority has been busy serving up several exclusive details on the next-gen GM Small Block V8, but now, we're wondering - ...

The thinner in oil is the easier it pumps through the engine, which leads to a fuel economy improvement. We can all understand that, but there's a lot more to oil viscosity than how thick it is. I ...

You might think thicker oil protects your engine better, but it can actually cause serious damage. Here are the biggest risks ...

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

For 2010, the U.S. Department of Energy expects diesel prices to average nearly $3 a gallon. As diesel prices head back up, it may be time to look at the possibility of switching to a more ...

Every fleet owner should know the basics about the viscosity of the lubricants they are using and why the viscosity matters. Fleets—especially mixed ones—require a variety of lubricants. This ranges ...

Specialists weigh in on cold starts, wear protection and other oil viscosity matters. Nine out of 10 heavy-duty long-haul trucks use 15W40 oil. Despite that long-standing domination, that viscosity ...

When it comes to determining and choosing an oil weight, none of it involves weight as we commonly think of it—there are no weight scales involved in weighing oil. Instead, in this circumstance, ...

Southwest Research Institute (SwRI) has upgraded its High-Viscosity Flow Loop (HVFL) to meet increased demands in the oil and ...

It's commonly believed that thicker oil offers better protection in cars. However, using thicker oil has some downsides that could ruin your ride.