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 ...

I was relieved that I didn't just go ahead and throw in the spare 5W-30 ... Oil viscosity is most frequently measured on a scale created by the Society of Automotive Engineers (SAE), which ...

Common engine oil codes include 10W-30, 5W-30, and 0W-20 ... When it comes to engine oil, the SAE maintains a set of oil viscosity standards. These standards allow us to purchase and use engine ...