I watched them build the diesel bike. Pretty neat idea actually. Never heard of Monster Diesel additive but like you say he makes it sound like the best product in the world. I too would be interested in hearing from someone who has tried it.
2007 Silverado Classic 2500HD, EC, SB, 4x4 LBZ, Allison 1000 6 speed, Banks 3" Intercooler Tube, BD LH Exhaust Manifold, Diamod Eye Downpipe, MBRP 4" Cat Delete Pipe, Banks 4" Monster Exhaust, GoodYear 265/75R 16E, Eagle Alloy 16"x8" wheels, Autometer EGT/Boost gauges, 50 gal in bed aux fuel tank.
A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.