The primary component of the lubrication system is engine oil. Engines require oil blends with different thickness (viscosity) and additives depending on their operating conditions. Viscosity is rated using the format XW-XX with the number preceding the W (winter) rating the oil’s viscosity at 0 ℉ (-17.8 ℃) and the XX indicating viscosity at 100 ℃.
Viscosity is rated using the format XW-XX with the number preceding the W rating the oil’s viscosity at __________ ℉ and the XX indicating viscosity at __________ ℃.