SECTION 1. Section 145 of the National Internal Revenue Code, as amended, is hereby further amended to read as follows:
"SEC. 145. Manufactured oils and other fuels. – There shall be collected on refined and manufactured mineral oils and motor fuels, the following specific taxes which shall attach to the goods hereunder enumerated as soon as they are in existence as such:
"(1) Lubricating oils and greases including but not limited to base stock for lube oils and greases, high vacuum distillates, aromatic extracts and other similar preparations, and additives for lubricating oils and greases whether such additives are petroleum based or not, per liter of volume capacity, Four pesos and fifty centavos (P4.50): Provided, however, That the specific taxes paid on the purchased feedstock (bunker) used in the manufacture of excisable articles and forming part thereof shall be credited against the specific tax due there from: Provided, further, That lubricating oils and greases produced from base stocks and additives on which the specific tax had already been paid shall no longer be subject to specific tax;
"(2) Processed gas, per liter of volume capacity, Five centavos (P0.05);
"(3) Waxes and petrolatum, per kilogram, Three pesos and fifty centavos (P3.50);
"(4) On denatured alcohol to be used for motive power, per liter of volume capacity, Five centavos (P0.05): Provided, That unless otherwise provided by special laws, if the denatured alcohol is mixed with gasoline, the specific tax on which has already been paid, only the alcohol content shall be subject to the tax herein prescribed. For purposes of this subsection, the removal of denatured alcohol of not less than one hundred eighty degrees proof (ninety percent absolute alcohol) shall be deemed to have been removed for motive power, unless shown otherwise;
"(5) Naphtha, regular gasoline and other similar products of distillation, per liter of volume capacity, Four pesos and eighty centavos (P4.80): Provided, however, That naphtha, when used as a raw material in the production of petrochemical products or as replacement fuel for natural gas-fired combined cycle power plant, in lieu of locally-extracted natural gas during the non-availability thereof, subject to the rules to be promulgated by the Secretary of Energy in consultation with the Secretary of Finance, per liter of volume capacity, Zero (P0.00): Provided, further, That the byproduct including fuel oil, diesel fuel, kerosene, pyrolysis, gasoline, liquefied petroleum gases and similar oils having more or less the same generating power, which are produced in the processing of naphtha into petrochemical products shall be subject to the applicable specific tax specified in this section, except when such byproducts are transferred to any of the local oil refineries through sale, barter, or exchange, for the purpose of further processing or blending into finished products which are subject to specific tax under this section;
"(6) Leaded premium gasoline, per liter of volume capacity, Five pesos and thirty-five centavos (P5.35); unleaded premium gasoline, per liter of volume capacity, Four pesos and thirty-five centavos (P4.35);
"(7) Aviation turbo jet fuel, per liter of volume capacity, Three pesos and sixty-seven centavos (P3.67);
"(8) Kerosene, per liter of volume capacity, Sixty centavos (P0.60): Provided, That kerosene, when used as aviation fuel, shall be subject to the same tax on aviation turbo jet fuel under the preceding paragraph (7), such tax to be assessed on the user thereof;
"(9) Diesel fuel oil, and on similar fuel oils having more or less the same generating power, per liter of volume capacity, One peso and sixty-three centavos (P1.63);
"(10) Liquefied petroleum gas, per liter, Zero (P0.00): Provided, That liquefied petroleum gas used for motive power shall be taxed at the equivalent rate as the specific tax on diesel fuel oil;
"(11) Asphalts, per kilogram, Fifty-six centavos (P0.56); and
"(12) Bunker fuel oil, and on similar fuel oils having more or less the same generating power, per liter of volume capacity, Thirty centavos (P0.30)."