Look on the motors nameplate to see what oil it uses.3 in one may be too light unless it formulated for very large motors.-Like 5 hp and above as this motor appears to be.Before you try to turn things by hand--MAKE SURE THE POWER IS DISCONNECTED TO THE UNIT!!!We don't want anyone getting wrapped up in this beast.Locate the power disconnect switch before working on the unit and turn it off-and lock it out if you can.
