Okla. Stat. tit. 14A, § 3-207
The parties may agree to add to a revolving loan account the unpaid balance of a consumer loan, not made pursuant to a revolving loan account, or a refinancing, or consolidation thereof, or the unpaid balance of a consumer credit sale, refinancing, or consolidation. For the purpose of this section
Laws 1969, HB 1001, c. 352, § 3-207, emerg. eff. July 1, 1969.