it is acceptable to use a SAE equivalent engine oil as defined in the Owners Manual. Using oil and fluids that do not meet the defined specification and viscosity grade may lead to: ...

It is a primary component of how SAE oil grades are defined (15W-40, 10W-30, 5W-40, 5W-30, etc.). Absolute viscosity is expressed as centipoise (cP). It is a measure of frictional drag within the ...