I have a 95' Z28 w/ little over 100K miles and there is a regular little clicking sound you can hear and it sounds like its coming from the front half of the driver side valve cover. Ive been told to just run a lil heavier oil and see if that will quiet it down. I dont really want to spend much money on it so any suggestions as to what it could be and easy/inexpensive ways to fix it would be greatly appreciated. Thanks.

 

Please, no smart a$$ remarks because i know you can hear them all quietly working but what I meant was it sounds like one set is much louder then the rest and I want to get rid of its noise so everthings quiet again.