Abstract: A method monitors pumping operations of a vehicle that pumps various fluid treatments down into a well being serviced at a well site. The method records the vehicle's engine speed and the values of one or more fluid-related variables, such as pressure, temperature, flow rate, and pump strokes per minute. The values are recorded as a function of the time of day that the variables and engine speed were sensed. In some embodiments, the recorded values are communicated over a wireless communication link from a remote well site to a central office.