Grades & Uses of Motor Oil?

Answer Most people know they are supposed to change the oil in their cars approximately every 3,000 miles or three months, whichever occurs first. However, they may not know much about how their oil works... Read More »

Top Q&A For: Grades & Uses of Motor Oil

How to Mix Motor Oil Grades?

Most engine oil is premixed with two different viscosity oils, and all engine oil has a rating that denotes both the viscosity when cold and the viscosity when warmed to normal engine operating tem... Read More »

Guide to Motor Oil Grades?

Motor oil serves as a protective lubricant within an automobile's engine. The purpose of this lubricant is to decrease the likelihood of metal grinding on metal, as the motor oil creates a slick bu... Read More »

Difference in Motor Oil Grades?

For a car novice, going to an auto parts store to purchase a bottle of motor oil can seem like a daunting task. Not only are there multiple brands to choose from, but there are also several differe... Read More »

Are high school grades good indicators of college grades?

On One Hand: Testing May Be ReliableAccording to a research study conducted by UC Berkeley's Center for Studies in Higher Education, there's a "widespread perception" that standardized tests, not h... Read More »