Become a Fuels Customer To open a Fuels account with Guttman Oil Company, complete and return a credit application and ACH authorization form. Please fax or mail the completed and signed forms to your sales representative or: Guttman Oil Company Fuels Division 200 Speers Street Belle Vernon, PA 15012 Fax: 724-489-5134 Guttman Oil Company Credit Application Download Basic confidential application to establish credit terms with Guttman Oil Company. ACH Form Download Form authorizing Guttman Oil Company to deduct payments directly from customer's financial institution on invoice due date.