Hey Guys,
Have a 95 Z28 with an M6. I've noticed that past few years that the motor is 'louder' than it used to be. Metalic chain line noices at certain RPM. She has 70K miles on her now. I run Mobile 5/30 syntetic. I know it is still tight cause my emissions and dyno runs are both much better than I execpted. Is this just something I have to ignore or would a thicker oil take care of it with out causing other problems.

Thanks,
Asim