We had a lady on here last year that plugged her DPF up pretty quick running LSD in her 2008. She was from Italy. Your best bet would be to delete the DPF. IIRC the warranty will not cover the use of LSD anyway.
Just for clarification, your truck wil run fine on LSD. The DPF however will clog up fast. It is the only part on the truck not designed to run on LSD. If you delete it you can run LSD without issues. I would however block the EGR off as well. Just because your exhaust will be more "sooty"