My belts were squealing on both my truck & car so l checked cures at Walmart & the Super Tech belt dressing says on the tin, Stops Slip & Eliminates squeaks & also Suitable For All Belts. It made both belts worse, l did apply it as required by their instructions. I have replaced BOTH truck & car belts since using it at a cost of $50 plus labor costs by me of 2hrs. This stuff should not be allowed to be sold, & Walmart have agreed they will do an investigation because l would not let it go! This is a serious matter!!