Join Date: Apr 2006
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"Or put some soapy water on it " Ouch! Never! Never put soap on rubber, it rots the rubber and gives it a better grip for a while--but then the rotten rubber fails. Drag racers used to soap their tires to get better traction at starts.
There's never been a belt maker that recommeneded any "belt dressing" or other magic in a can, it can't solve anything that proper pulley alignment, belt tension, and a good belt can't solve without the goo.
Too much belt tension can also ruin the alternator and engine bearings, and squeaing *could* mean an alternator bearing is failing--not just the belt. Better to check the belt condition, check for correct tension, and then check pulley alignment. If it still squeals, and the squeal is coming from the alternator, pull it and check for bearing problems. If the bearings freeze you've got a bigger problem.