Okla. Stat. tit. 15, § 19

In all cases other than those specified herein, the contract of a minor may be disaffirmed by the minor himself, either before his majority or within one (1) year's time afterwards; or, in case of his death within that period, by his heirs or personal representatives. Provided, that any minor between the ages of sixteen (16) and eighteen (18) who has paid for any repairing, supplying or equipping on any type of a motor vehicle may disaffirm said contract in like manner only by restoring the consideration to the party from whom it was received.