Abstract: Mobile systems for mixing and dispensing. The systems include a vehicle, a dispenser, a means for transferring a primary fluid to the dispenser from a primary fluid source, and one or more vessels of a secondary fluid that are fluidly connected to the dispenser. The dispenser includes an assembly of fluid distribution components that define a fluid channel that enables the primary fluid to flow through the dispenser. Incorporated into the fluid channel is an aspirator component that enables the dispenser to aspirate a secondary fluid into the fluid channel when the primary fluid is flowing through it, thereby yielding an operative fluid. Disclosed are embodiments of the system where the means for transferring a primary fluid is either a stand-alone pump or a truck mount. Also disclosed are embodiments of the system where the primary fluid source is a portable vessel located within the interior of the vehicle.