Back in the early 20th century, there were only five motor oil grades. Today, there are more than a dozen for various types ...

You could save as much as 1 percent on your fuel economy simply by switching from a 15W-40 engine oil to a 10W-30 engine oil, according to new research from Chevron Oronite.

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 ...

Cars rely on a variety of lubricants to keep their moving parts from becoming expensive glitter, and that’s all down to viscosity, the ability of a material to flow without deforming (known as shear).

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 ...

The downsides of using thicker oil are inversely related to the effects of using thinner oil. One of the most notorious motor oil myths is that thicker oil offers better protection than lower ...

The measurement of an oil’s resistance to flow is known as its viscosity. Usually, with a temperature increase, we can expect viscosity to diminish, and reduce with a temperature decrease. Temperature ...

The second car that I ever owned was a 2002 Chevy Silverado 2500 with a 6.6L Duramax diesel engine under the hood. It wasn't my first choice, but it was a hand-me-down from my father after my 1993 ...

However, traditional methods (such as ASTM D445) are hindered by high maintenance needs, extensive manual input requirements, and time-consuming operations. The advanced patented technology utilized ...