Oil consumption troubles? Just wondering if all the NBS 07-011 GMC's and chevys with the 5.3 are having the issues with using a lot of oil or just a few? A GM mechaninc friend told me there were many getting new pistons and rings and such because of the AFM and shutting down from 8 to 4 cylinders and not getting enough oil to the cylinders. I'm wondering if you program out the AFM to where the truck runs on all 8 cylinders if that would stop the problem from happening or not? I have an 07 NBS 5.3 with 43,000 miles and so far it runs great just hoping it doesn't start using oil like many have had issues with.