ORS § 319.070
Any surety on a bond furnished by a dealer as provided in ORS 319.050 shall be released and discharged from any and all liability to the state accruing on such bond after the expiration of 30 days from the date upon which the surety has lodged with the Department of Transportation a written request to be released and discharged, but this provision shall not operate to relieve, release or discharge the surety from any liability already accrued or which accrues before the expiration of the 30-day period. The department shall promptly, upon receiving the request, notify the dealer who furnished the bond, and unless the dealer, on or before the expiration of the 30-day period, files a new bond, or makes a deposit in accordance with the requirements of ORS 319.050 and 319.060, the department forthwith shall cancel the dealer's license.
ORS 319.070