Fan belts and other rubber drive belts can squeak or squeal if they’re not correctly adjusted for tension. Usually, a too-loose belt will be the cause, and to fix it, you need to slacken off the ...

WD-40's noise-eliminating ... WD-40 Specialist Belt Dressing is available from Auto Pro in the United States or Repco in Australia and is perfectly safe to use on squeaky accessory belts.