If the oil level increases via the dip stick , &/or you see water droplets on the dipstick , its an indication the coolant is getting into the engine oil via a bad gasket or cracked head or block . Another indication is a white milky residue in the oil breather or filler cap .
Most antifreeze liquids if mixing w/ the engine oil will remove the lubricity from the oil so not a good idea to drive the car if this is the case .