While mower maintenance is infrequent, it’s also important to do properly—starting with the correct type of oil for lawn ...

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 ...

Those letters can often be found alongside the likes of SAE and 5W-30, among ... of motor oil, the number and letter combinations found on the label convey its viscosity, or ease of flow at ...