I recently noticed that my car (98 Civic) was making a squeaking sound from under the hood after running for a while. It's not really loud, but slightly audible from inside the car and very easy to hear while standing outside. I took a look while the engine was running and saw that one of the belts was making the sound, so I sprayed some belt lubricant stuff on it and the sound disappeared... for about a day. It started squeaking again the next day. I have done this a few times, and every time the sounds comes back after a day or so. Is this a sign that one of the belts is nearing the end of its life, or is this normal and is there something I can buy to stop the squeaking?