I was wondering if the maintenance schedule that has been tested over the years will hold true for the new 07.5 LMM's. I understand that I will have to use different rated oil to deal with the new emmissions gear. I have nearly 1000 miles on the new Silverado and I plan to do a lot of towing soon. What schedule are most of you following and when should I do the first fluid change? What brand to use as well.