i think you can get a silicone spray especially for rubber bushings. spray it on each bushing untill the squeek dissapears, then have that bushing checked to see if it needs replacing. if the bush is fooked then replace it instead of constanly spraying lubricant onto it
spray silicone spray on the anti roll bar bushes and set what the noise is like, if it goes replace the anti roll bar bushes, use proflex ones if possible