The automotive world is constantly evolving, and so is the motor oil that keeps our engines alive and running smoothly. The ...

The starburst symbol on the left indicates that the oil has passed the service tests listed in the other doughnut. Viscosity refers to a fluid's resistance to flow. Most motor oils’ viscosity is ...

are required in formulating lower viscosity heavy-duty engine oil grades such as 10W-30, 5W-40, 5W-30 and 0W-40; hold potential for higher temperature performance (typically applies only to all ...

It's acceptable to use 0W-20 engine oil in place of 5W-20 or even 10W-20, since the number preceding the W refers to its ...

In the past, there have been similar shifts in preferred engine oil viscosity grades. An example is the transition in heavy duty diesel engine oils in the 1980s from monograde viscosity SAE 30 and ...