Exhibit 5


                                 July 11, 2001




IIG Equity Opportunities Fund, Ltd.
17 State Street
New York, New York 10004

Gentlemen:

     We have acted as counsel to International Fuel Technology, Inc., a Nevada
corporation (the "Company"), in connection with the issuance and sale to you of
up to 21,430,000 shares of the Company's common stock (the "Common Stock")
pursuant to the Securities Purchase Agreement dated as of July 10, 2001 between
the Company and you (the "Purchase Agreement"). This letter is being delivered
to you pursuant to Section 6.1(h) of the Purchase Agreement. All capitalized
terms used in this letter which are defined in the Purchase Agreement but not
otherwise defined herein shall have the meanings assigned to them in the
Purchase Agreement.

     As counsel to the Company, we have examined such corporate documents and we
have made such inquiries or investigations of such other legal and factual
matters as we have deemed necessary or appropriate for purposes of this letter.

     In rendering this opinion, we have relied upon and assumed the following
without independent investigation or verification of any kind:

          (a) We have assumed the authenticity of all documents and instruments
submitted to us as originals, the genuineness of all signatures and the
conformity to original documents and instruments of all documents and
instruments submitted to us as certified, photostatic or telecopied copies.

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          (b) We have assumed the power and authority of each corporate (other
than the Company) signatory of a document or instrument to execute said document
or instrument.

          (c) As to matters of fact, we have relied without independent
investigation upon certificates or other written statements of public
authorities and certificates or other written statements of officers and
directors of the Company. The phrases "to our knowledge" or "known to us", when
used herein, mean that with respect to the factual matter covered thereby, we
have undertaken no independent investigation or verification of such matters,
but have relied solely upon the representations and warranties of the Company
contained in the Purchase Agreement (including the Disclosure Schedule annexed
thereto) or have obtained certificates from officers and directors of the
Company as to such factual matters, and subject to the qualifications
hereinafter set forth, nothing has come to the attention of those attorneys in
our office who directly participated in this engagement that (x) would give them
actual knowledge or actual notice that such representation or warranty is not
accurate or complete, or (y) any information set forth in any of the foregoing
documents, certificates and information on which they have relied is not
accurate or complete.

          (d) We have assumed that any certificate of a public authority on
which we have relied that was given or dated earlier than the date of this
opinion continues to remain accurate, insofar as relevant to such opinion, from
such earlier date through and including the date of this opinion.

          (e) We have assumed the consummation of the transactions contemplated
at the Closing and the receipt of the proceeds thereof.

          (f) We have assumed the due authorization, execution and delivery by
you of the Purchase Agreement and the Registration Rights Agreement
(collectively, the "Transaction Documents"), and that the Transaction Documents
are legal, valid and binding obligations of yours enforceable against you in
accordance with their terms. We also have assumed that your representations and
warranties in the Purchase Agreement are true and correct.

     In addition, we wish to advise you that:

          (g) As members of the Bar of the State of Missouri, we do not purport
to be experts in the laws of any jurisdictions other than the Federal laws of
the United States and the laws of the State of Missouri. For purposes of the
opinions set forth in this letter, we have assumed that the General Corporation
Law of the State of Nevada, the jurisdiction in which the Company is
incorporated, is similar to the General and Business Corporation Law of
Missouri. No opinion is expressed with respect to the laws, rules or regulations
of any other jurisdiction, whether U.S. or foreign.

          (h) The enforceability of any agreement referred to in this letter is
limited by applicable bankruptcy, insolvency, reorganization, fraudulent
conveyance, moratorium and other laws of general application relating to or
affecting creditors' rights and the application of equitable principles relating
to the availability of remedies (regardless of whether such enforceability is
considered in a proceeding in equity or at law), and rights to indemnity and


contribution may be limited by federal or state securities laws and the public
policy underlying such laws.

          (i) We note that the provisions of Sections 2.3, 2.4 and 10.4 of the
Purchase Agreement and Section 2.6 of the Registration Rights Agreement may be
construed as provisions for liquidated damages and subject to enforceability
under laws relating thereto. We also note the Nevada Revised Statutes contain
certain restrictions relating to redemption of stock.

          (j) In rendering our opinion set forth in number paragraph 4 below, we
have not conducted any special review of statutes, rules or regulations and our
opinion with respect thereto is limited to such Missouri, Nevada corporate and
United States laws as in our experience are normally applicable to transactions
of the type contemplated by the Transaction Documents.

          (k) In rendering our opinion set forth in number paragraph 7 below, we
have relied upon your representations and warranties in Section 5.1 of the
Purchase Agreement and have assumed that the Company and any person acting on
its behalf have complied and will comply with the provisions relating to the
manner of sale contained in Rule 502(c) as promulgated under the Securities Act
with respect to the offer, sale and issuance of the Common Stock that the offer,
sale and issuance of the Common Stock will not be integrated with any other
offer, sale or issuance of the Company's securities.

          (l) We express no opinion with respect to environmental, health,
safety or similar laws or as to any compliance by any person therewith.

          (m) All references set forth below in this opinion to any "contracts",
___ "agreements", "instruments", "documents", "licenses", "certificates",
"permits" or "authorizations" refer only to such items to the extent that they
are: (i) in English; and (ii) governed by U.S. law.

          (n) All references set forth below in this opinion to "orders",
"judgments", "consents", "approvals" or "decrees" refer only to such items if
issued pursuant to U.S. law.

     Based upon and subject to the foregoing, we are of the opinion that:

     1.       The Company has been duly incorporated, is validly existing and is
          in good standing as a corporation under the laws of the State of
          Nevada, and has the requisite corporate power and authority to own its
          properties and conduct its business as described in the Company's
          Annual Report on Form 10-K for the year ended December 31, 2000.

     2.       The Company has all requisite corporate power and authority to
          execute, deliver and perform its obligations under the Transaction
          Documents. The Transaction Documents have been duly authorized by all
          requisite corporate action on the part of the Company and no further
          consent or authorization of the Company or its Board of Directors or
          stockholders is required. Each of the Transaction Documents has been
          duly executed and delivered by the Company, and constitute legal,
          valid and binding obligations of the Company, enforceable against it
          in accordance with their terms.


     3.         The Common Stock, when issued against payment of the purchase
          price specified in the Purchase Agreement, will be validly issued.

     4.         The Company has obtained all consents, approvals, authorizations
          and orders of governmental entities required for the execution,
          delivery and performance of the Transaction Documents by the Company
          and the consummation by the Company of the transactions contemplated
          thereby.

     5.         The execution, delivery and performance of the Transaction
          Documents by the Company will not result in a breach or violation of
          any terms and provisions of, or constitute a default under, (i) the
          articles of incorporation or bylaws of the Company, (ii) any agreement
          or document filed with the SEC Reports, or (iii) any Nevada corporate,
          Missouri or federal law or regulation.

     6.         To our knowledge, there is no litigation, proceeding or
          governmental investigation pending or overtly threatened against the
          Company or any Subsidiary that relates to any of the transactions
          contemplated by the Transaction Documents.

     7.         The offer, sale and issuance of the Common Stock in accordance
          the terms of the Purchase Agreement is exempt from the registration
          requirements of the Securities Act pursuant to Regulation D thereof.

     8.         The Common Stock, when issued upon payment of the purchase price
          specified in the Purchase Agreement, as the case may be, will be
          validly issued and outstanding, fully paid and nonassessable.

     9.         We have been advised by the Company that a member of the staff
          of the Division of Corporation Finance of the SEC that has informed
          the Company that the Registration Statement has been declared
          effective by the Securities and Exchange Commission (the "SEC") and,
          to our knowledge, no stop-order suspending the effectiveness of the
          Registration Statement has been issued by the SEC.

     In addition, we have participated in the preparation of the Registration
Statement, and, although we have not independently verified and are not passing
upon and do not assume any responsibility for the accuracy, completeness or
fairness of the statements contained in the Registration Statement, on the basis
of the foregoing and relying as to materiality upon the representations of
executive officers of the Company after conferring with such executive officers,
except as to the Excluded Matters (as hereinafter defined), nothing has come to
our attention which would lead us to believe that the Registration Statement, as
of the date it became effective under the Securities Act contained, or on the
date hereof contains, any untrue statement of a material fact or omitted, or on
the date hereof omits, to state a material fact required to be stated therein or
necessary to make the statements therein not misleading. As used herein,
"Excluded Matters" means (i) information under the caption "Plan of
Distribution" and (ii) information under the caption "Selling Shareholders"
relating to you.


     The opinions expressed herein are limited solely to those items set forth
above, and we specifically do not render any opinions pertaining to any matter
not expressly stated herein. The information and opinions set forth in this
letter are as of this date, and we disclaim any undertaking to advise you of
changes that thereafter may be brought to our attention.

     This letter is provided to you solely for your benefit in connection with
the Purchase Agreement. This letter may not be provided to, circulated, used,
quoted to or relied upon by any other person without our prior written consent.



                                                     /s/ Armstrong Teasdale LLP

                                                     Armstrong Teasdale LLP