40 C.F.R. § 1065.703

Current through September 30, 2024

Section 1065.703 - Distillate diesel fuel

(a) Distillate diesel fuels for testing must be clean and bright, with pour and cloud points adequate for proper engine operation.

(b) There are three grades of #2 diesel fuel specified for use as a test fuel. See the standard-setting part to determine which grade to use. If the standard-setting part does not specify which grade to use, use good engineering judgment to select the grade that represents the fuel on which the engines will operate in use. The three grades are specified in Table 1 of this section.

Table 1 of § 1065.703 -Test Fuel Specifications for Distillate Diesel Fuel

Property	Unit	Ultra low sulfur	Low sulfur	High sulfur	Reference procedure ^a
Cetane Number		40-50	40-50	40-50	ASTM D613.
Distillation range:
Initial boiling point	°C	171-204	171-204	171-204	ASTM D86.
10 pct. point		204-238	204-238	204-238
50 pct. point		243-282	243-282	243-282
90 pct. point		293-332	293-332	293-332
Endpoint		321-366	321-366	321-366
Gravity	°API	32-37	32-37	32-37	ASTM D4052.
Total sulfur	mg/kg	7-15	300-500	800-2500	ASTM D2622, ASTM D5453, or ASTM D7039.
Aromatics, min. (Remainder shall be paraffins, naphthenes, and olefins)	g/kg	100	100	100	ASTM D5186.
Flashpoint, min.	°C	54	54	54	ASTM D93.
Kinematic Viscosity	mm²/s	2.0-3.2	2.0-3.2	2.0-3.2	ASTM D445.

^a Incorporated by reference, see § 1065.1010 . See § 1065.701(d) for other allowed procedures.

(c) You may use the following nonmetallic additives with distillate diesel fuels:

(1) Cetane improver.

(2) Metal deactivator.

(3) Antioxidant, dehazer.

(4) Rust inhibitor.

(5) Pour depressant.

(6) Dye.

(7) Dispersant.

(8) Biocide.

40 C.F.R. §1065.703

70 FR 40516, July 13, 2005, as amended at 73 FR 37340, June 30, 2008; 73 FR 59341, Oct. 8, 2008; 75 FR 23057, Apr. 30, 2010; 77 FR 2464, Jan. 18, 2012;79 FR 23807, Apr. 28, 2014; 85 FR 78468, Dec. 4, 2020; 86 FR 34569, June 29, 2021

85 FR 78468, 12/4/2020; 86 FR 34569, 7/29/2021