Oil Change intervals
#5
The intervals vary based on your driving. I think that the manual states to do it when the DIC tells you or once a year whatever comes first. It took me a while to get used to that myself, I started out doing it every 3k now I follow the DIC. Just do whatever you are comfortable with.
#6
This discussion has been going on here for years. The consensus is: do what makes you happy, but be mindful of the environmental and economic impact of your choices. No one has come forward with a problem resulting from a DIC malfunction, and none probably will considering the system was in development for years before it was first introduced on Corvette and Cadillac 16 years ago.