Hey how's it going y'all....I'm Brian. I just bought my first diesel in February and wanted to learn some stuff. I believe I've come to the right place. I bought a 2016 GMC Sierra 2500 hd Denali. I love a diesel. It came it real handy the other day when I moved my uncles party barge. I work on the road and do a lot of driving. Anyway, it's nice to meet y'all and I'll be checking stuff out for a while. (I'm not sure if my sig is showing up cause I'm doing this all on my phone, but I did make one.) thanks in advance for the info and advice. Btw, what should be the first thing to do to a stock diesel?