(a) Except as specified in AS 43.40.010(j), a person who uses motor fuel to operate an internal combustion engine is entitled to a motor fuel tax refund of six cents a gallon if
(1) the tax on the motor fuel has been paid;
(2) the motor fuel is not aviation fuel, or motor fuel used in or on watercraft; and
(3) the internal combustion engine is not used in or in conjunction with a motor vehicle licensed to be operated on public ways.
(b) The entire amount of the motor fuel tax levied by this chapter shall be refunded to the purchaser on that part of the motor fuel used in a foreign country on which the tax has been paid when the fuel is sold and delivered in the state for non-highway use in a foreign country.
(c) The department shall establish the necessary regulations and prescribe the appropriate forms to prove that, for purposes of the motor fuel tax, the motor fuel is taken to and used in foreign countries.
(d) If a person obtains motor fuel on which the motor fuel tax levied by this chapter has been paid and the motor fuel is exempt from the motor fuel tax, the person is entitled to a refund of the motor fuel tax paid.