Deposit sloughing' from waxy' crude oils has been described in the literature as a possible mechanism, leading to partial or complete dislodging of the deposit from the pipe wall due to changes in flow parameters. A bench-scale flow loop apparatus was used to investigate sloughing' with prepared single-phase waxy' mixtures of a multicomponent paraffinic wax dissolved in a multicomponent solvent. Experiments were performed to study the changes in the deposit-layer thickness due to step increments in the waxy' mixture flow rate, the mixture temperature, and the coolant temperature. It was observed that the deposit-layer thickness decreased with an increase in each of the three parameters; however, a complete or sudden dislodging of the deposit-layer did not occur in any of the experiments. A steady-state heat-transfer model was used to predict the variation in the deposit mass or thickness due to changes in the selected parameters. In each case, the step-wise decrease in the deposit thickness, as observed experimentally, was predicted to be caused by changes in the thermal resistance and/or thermal driving force.