A quantitative description of state-to-state dynamics properties comparable to experiments would require full dimensional quantum mechanical (QM) calculations, based on very accurate PESs. For polyatomic systems however this goal is today computationally prohibitive. An interesting and computationally economic alternative are the quasi-classical trajectory (QCT) calculations. QCT calculations based on the new PES-2024 surface were performed at room temperature, and the results compared with the experimental evidence. Using the VENUS96 code trajectories were propagated from an initial C…OH separation of 15 Å, and stopped when this distance was greater than 20 Å, in order to ensure that no interaction was present in the reactant and product limits. To ensure that the energy and angular moments were conserved along each trajectory we used a propagation step of 0.1 fs. At 298 K we ran 200 000 trajectories, where the OH radical rotational and vibrational quantum numbers were fixed at the ground-state. The methanethiol vibrational and rotational energies were selected by thermal sampling to reproduce room temperature thermal distribution, while the remaining initial conditions (spatial orientation, impact parameter and vibrational phases) were randomly selected from a Monte Carlo sampling. Using small batches of trajectories, until no reactive trajectories were found, the maximum impact parameter was determined, bmax= 8.0 Å.