I've had an LB7, LBZ, and now I just bought a used 2011 LML. 39k miles SLT. Just wondering if you all have any insight for a new owner. This is my first emissions truck, so that's a big change. As for everything else the same as it was for my older duramax's? Such as external trans filter, recommended extra fuel filter, lift pump, adding a fuel additive every tank? The truck is stock beside a Magna flow exhaust, however I believe it is from the DPF and back since it doesn't 'sound' like a Duramax that had been deleted. Thanks guys. Sent from my Pixel 3 using Tapatalk