In this section, we discuss and analyze the results. As a starting point, we note that filtered tuning parameters results show good agreement between deterministic and Bayesian for all cases. The best deterministic curve almost matches the 50th-percentile curve from Bayesian approach, indicating a proper verification (and consistency) of the methods. More specifically for the study cases used in this work, only (3rdCSP ) and (4thCSP ) are identified as influential parameters for CSP viscosity model calibration for all oil samples. This result is expected, since we are considering only heavy oil samples. About the sensitivity measures and how they were applied in the cases, as the viscosity experiments were performed for fixed temperature while pressure is define at a wide range, the normalized overall sensitivity measures showed just slightly changes within all evaluated pressure conditions, suggesting that adopting s * i ≥ 0.05 as calibration criterion if satisfied for any experimental condition is reasonable for the cases considered in the present work.