Section 82.23B.045 - Refund or credit-Petroleum products used by consumers for nonfuel purpose or used in manufacture of nonfuel item(1) Any person having paid the tax imposed by this chapter who uses petroleum products as a consumer for a purpose other than as a fuel may claim refund or credit against the tax imposed under this chapter. For this purpose, the term consumer shall be defined as provided in RCW 82.04.190.(2) Any person having paid the tax imposed by this chapter who uses petroleum products as a component or ingredient in the manufacture of an item which is not a fuel may claim a refund or credit against the tax imposed by this chapter.(3) The amount of refund or credit claimed under this section may not exceed the amount of tax paid by the person making such claim on the petroleum products so consumed or used. The refund or credit allowed by this section shall be claimed on such forms and subject to such requirements as the department may prescribe by rule.