What is everyone's thoughts about driveline fluid maintenance, ( intervals and product ) I have always done the differentials, transfer case and transmission fluids every 30,000 miles on all my trucks, I also just use the GM fluid knowing I change it often enough and who should know there vehicles better then GM right. I currently own a 2020 6.2 1500 and do drive a bit aggressive ( love the power of that 6.2) also tow 6000 lbs a few times a month. I've been a firm believer in fresh fluid is good cheap insurance. I'd like to hear everyone's opinion of my rights and wrongs. Thanks!