; and (2) by striking $105.69 per thousand in paragraph (2) and inserting $130.69 per thousand . 6. Increase in tax on motor fuels (a) Gasoline other than aviation gasoline Section 4081(a)(2)(A)(i) of the Internal Revenue Code of 1986 is amended by striking 18.3 cents and inserting 53.3 cents . (b) Diesel fuel or kerosene Section 4081(a)(2)(A)(iii) of such Code is amended by striking 24.3 cents and inserting 59.3 cents . (c) Increase for inflation Section 4081(a)(2) of such Code is amended by adding at the end the following new subparagraph: (E) Adjustment for inflation In the case of any calendar year beginning after 2018, the rates of tax contained in clauses (i) and (iii) of subparagraph (A) shall each be increased by an amount equal to— (i) such rate, multiplied by (ii) the cost of living adjustment determined under section 1(f)(3) for the calendar year, determined by substituting calendar year 2016 for calendar year 1992 in subparagraph (B) thereof. Any increase under the preceding sentence shall be rounded to the nearest 0.1 cents. . (d) Diesel-Water fuel emulsion Section 4081(a)(2)(D) of such Code is amended by striking substituting 19.7 cents for 24.3 cents . and inserting substituting a rate equal to 81 percent of the rate in effect for the calendar year under such subparagraph. . (e) Effective date The amendments made by this section shall apply to fuels removed, entered, or sold after October 1, 2018. 7. Highway Trust Fund (a) Coordination with Fixed Guideway Capital Investment Trust Fund Section 9503(b)(4) of the Internal Revenue Code of 1986 is amended by striking or at the end of subparagraph (C), by striking the period at the end of subparagraph (D) and inserting , or , and by adding at the end the following new subparagraph: (E) clauses (i) and (iii) of section 4081(a)(2)(A), and section 4081(a)(2)(D), but only to the extent of amounts equivalent to the portion of such taxes as are appropriated to the Fixed Guideway Capital Investment Trust Fund under section 9513(b). . (b) Mass transit portion