fluid distribution and transmission systems, namely, integrated mobile, hydraulic, inter-vehicle fluid distribution and transmission systems comprised of a self-prioritized reservoir, an integrated multi-purpose main hydraulic pump serving as a cooling fan drive, system heater, single or multi-axle primary and secondary power-steering fluid supply with engine crankcase top-off provision, designed for use in those systems such as tactical-military, commercial, heavy-duty, off-highway, highway, on/off highway mobile and marine applications