This instrument is the Fuel Quality Standards (Conventional Diesel) Determination 2025.
2 Commencement
(1) Each provision of this instrument specified in column 1 of the table commences, or is taken to have commenced, in accordance with column 2 of the table. Any other statement in column 2 has effect according to its terms.
Commencement information
Column 1 Column 2 Column 3
Provisions Commencement Date/Details
The whole of this instrument The day after this instrument is registered.
Note: This table relates only to the provisions of this instrument as originally made. It will not be amended to deal with any later amendments of this instrument.
(2) Any information in column 3 of the table is not part of this instrument. Information may be inserted in this column, or information in it may be edited, in any published version of this instrument.
3 Authority
This instrument is made under section 21 of the Fuel Quality Standards Act 2000.
4 Definitions
Note: A number of expressions used in this instrument are defined in section 4 of the Fuel Quality Standards Act 2000, including fuel.
In this instrument:
ASTM followed by an alphanumeric code means the testing method developed under that code by the standards development organisation called ASTM International.
biodiesel has the same meaning as in the Fuel Quality Standards (Biodiesel) Determination 2025.
conventional diesel means all fuel supplied or represented as automotive diesel, excluding paraffinic diesel.
conventional diesel/paraffinic diesel blend means a fuel that is a blend of conventional diesel and paraffinic diesel and has a density of between 765 kg/m3 and less than 820 kg/m3 at 15°C.
Note: The density is to be determined in accordance with item 7 of the table in subsection 6(2) of this instrument.
EN followed by a numeric code means the testing method developed under that code by the European Committee for Standardization.
IP followed by a numeric code means the testing method developed under that code by the chartered professional body called the Energy Institute.
mg/kg means milligrams per kilogram, and is equivalent to ‘parts per million’ or ‘ppm’ by mass.
% m/m means per cent mass by mass, and is equivalent to ‘mass %’, ‘% mass’ and ‘weight %’.
paraffinic diesel has the same meaning as in the Fuel Quality Standards (Paraffinic Diesel) Determination 2025.
% v/v means per cent volume by volume, and is equivalent to ‘volume %’, ‘vol %’ and ‘% vol’.
5 Schedules
Each instrument that is specified in a Schedule to this instrument is amended or repealed as set out in the applicable items in the Schedule concerned, and any other item in a Schedule to this instrument has effect according to its terms.
6 Fuel standard for conventional diesel
(1) In relation to a parameter mentioned in an item of the following table, conventional diesel and conventional diesel/paraffinic diesel blends must comply with the relevant specification for that parameter mentioned in that item.
(2) For subsections (1) and (6), compliance with the specification for a parameter is determined by using the testing method for that parameter mentioned in that item of the table.
Fuel standard for conventional diesel and conventional diesel/paraffinic diesel blends
Item Parameter Specification Testing Method
1 Ash 0.01% m/m maximum ASTM D482
2 Biodiesel 5.0% v/v maximum EN 14078
3 Carbon residue—10% distillation residue 0.2% m/m maximum ASTM D4530
4 Cetane index for conventional diesel not containing biodiesel: 46 minimum ASTM D4737 Procedure A
5 Conductivity at ambient temperature for conventional diesel and conventional diesel/paraffinic diesel blends held by a terminal or refinery for sale or distribution: 50 pS/m minimum at ambient temperature ASTM D2624
6 Copper corrosion—3 h at 50°C Class 1 ASTM D130
7 Density at 15°C (a) for conventional diesel: 820–850 kg/m3(b) for conventional diesel/paraffinic diesel blends: between 765 and less than 820 kg/m3 ASTM D1298
8 Derived cetane number (a) for conventional diesel and conventional diesel/paraffinic diesel blends containing biodiesel: 51 minimum;(b) for conventional diesel/paraffinic diesel blends not containing biodiesel: 46 minimum ASTM D6890
9 Distillation—T95 360°C maximum ASTM D86
10 Flash point 61.5°C minimum ASTM D93
11 Filter blocking tendency 2.0 maximum IP 387
12 Kinematic viscosity 2.0–4.5 mm2/s at 40°C ASTM D445
13 Lubricity (a) for conventional diesel: 460 µm maximum; (b) for conventional diesel/paraffinic diesel blends containing 50% or more conventional diesel: 460 µm maximum(c) for conventional diesel/paraffinic diesel blends containing less than 50% conventional diesel: 400 µm maximum IP 450
14 Oxidation stability 2.5 mg/100 mL maximum ASTM D2274
15 Polycyclic aromatic hydrocarbons 11% m/m maximum IP 391
16 Sulfur 10 mg/kg maximum ASTM D5453
17 Water and sediment 0.05% v/v maximum ASTM D2709
18 Water for conventional diesel and conventional diesel/paraffinic diesel blends containing biodiesel: 200 mg/kg maximum ASTM D6304
(3) Any biodiesel component of conventional diesel must meet the requirements of section 6 of the Fuel Quality Standards (Biodiesel) Determination 2025 prior to being blended with conventional diesel.
(4) Any biodiesel that is blended with a conventional diesel/paraffinic diesel blend must meet the requirements of section 6 of the Fuel Quality Standards (Biodiesel) Determination 2025 prior to being blended with the conventional diesel/paraffinic diesel blend.
(5) Any conventional diesel component of a conventional diesel/paraffinic diesel blend must meet the requirements of this instrument prior to being blended with paraffinic diesel.
(6) Any paraffinic diesel component of a conventional diesel/paraffinic diesel blend must meet the definition of paraffinic diesel set out in the Fuel Quality Standards (Paraffinic Diesel) Determination 2025 and the relevant specification for each parameter mentioned in an item of the following table prior to being blended with conventional diesel.
Requirements for a paraffinic diesel component of a conventional diesel/paraffinic diesel blend
Item Parameter Specification Testing Method
1 Density at 15°C 765–810 kg/m³ ASTM D1298
2 Derived cetane number 51 minimum ASTM D6890
3 Distillation: (a) % v/v recovered at 250°C; (b) % v/v recovered at 350°C;(c) T95 (a) for % v/v recovered at 250°C: 65% v/v maximum;(b) for % v/v recovered at 350°C: 85% v/v minimum;(c) for T95: 360°C maximum ASTM D86