I'm not sure what OAR 4+ times means. A DWI test refusal and the punishment is dependent upon how many DWIs you might have. There is no mandatory minimum on a first time test refusal (if you do not have prior DWIs). The mandatory minimum if you have a priors within 10 years is as follows:
one prior - 30 days with 2 days in jail / 28 days of electronic house arrest
two priors - 90 days with 30 days in jail / 60 days of electronic house arrest
three priors - 180 days in jail