Everything from cars to snowmobiles to generators requires motor oil. In fact, all internal combustion engines use motor oil. Unfortunately, all most people know about motor oil is that they should change it in their car every so often. However, motor oil actually plays an important part in your automobile’s engine. It helps start your car, keeps engine parts lubricated, reduces friction, protects against rust and corrosion, keeps your engine parts clean, reduces combustion chamber deposits, cools your engine, and more. Needless to say, without motor oil, your engine would not run very well.
Not all motor oil is created equally though. Motor oil is graded by viscosity on a scale from 0 to 25, increasing in increments of 5. Some motor oils also feature the letter “W” alongside their numerical grade. The