Is it intake or head gaskets when water is getting into oil on 1999 Buick Century

Oil is milky on dip stick

Asked by for the 1999 Buick Century
Most of the time it is the intake gasket.After you change the gasket BEEEE SURE TO CHANGE your oil .Its best to change it crank it let it run while you top off your fluids antifreeze and let it get up to running temp then change your oil again then drive it for about 500 or so miles then change it again.The reason is antifreeze is real hard on rod and main bearings.Make them soft.Good luck