BLI 7231 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific UP 4012 Paragon4 F104 FT Silicone Diff Fluid

FT Silicone Diff Fluid

Pacific Blue dense gel specially developed to mimic the waters of the Pacific Ocean

Torsion: ≥2600g

MAXX MUSCLE

BLI 7231 N Scale Big Boy 4-8-8-4 Steam Loco Union Pacific UP 4012 Paragon4 F104 FT Silicone Diff FluidBLI 7231 N Scale Big Boy 4 8 8 4 Steam Loco Union Pacific UP 4012 Paragon4 Often called the largest steam loco ever made, and certainly a contender for the Worlds Most Famous Locomotive, the Big Boy was forged under some of the most strenuous demands ever placed on a locomotive. The UP Railroad needed a locomotive that could be used to pull a 3,600 ton train over Sherman Hill and the 1. 14% grade from Ogden to Wasatch, Utah without the need for