The department may promulgate rules necessary to implement this act

The department may promulgate rules necessary to implement this act. (d) The registration of mobile machinery expires ten (10) days after its transfer unless the original owner files an application for a transfer of ownership accompanied by the fees based on the amount which would be due on a new registration as of the date of transfer less any credit for the unused portion of the original registration fees for the original registration for the mobile machinery and an additional fee of six dollars ($6.00) with a county treasurer. Upon receipt of a completed application and the required fee, the county treasurer shall issue the new owner a new certificate of registration. The fee collected under this subsection shall be deposited in the county general fund. (e) The fee for mobile machinery shall be computed by multiplying the statewide average county, school district and state property tax mill levy for the preceding year as computed by the state board of equalization times the applicable assessment factor times the valuation of the mobile machinery. The department of revenue shall establish schedules for valuation of mobile machinery for use by county treasurers.