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 ...

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, ...

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 ...

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 ...

Putting vegetable oil in a car engine is a terrible idea and should never be done, or at least that's what some experts say.

A recent study used various gas oils and blends with residual heavy oils in order to evaluate the predictability of four different correlations. The gas oils differed substantially in their ...

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 ...

The best synthetic oils offer more mileage, keep the engine cleaner, perform equally well in low and high temperatures, and protect your engine by keeping wear at bay. When it comes to the topic of ...