§ 89.330-96 - Lubricating oil and test fuels.

(a) Lubricating oil. Use the engine lubricating oil for testing that meets the requirements as specified by the manufacturer for a particular engine and intended usage. Record the specifications of the lubricating oil used for the test.

(b) Test fuels. (1) Use diesel fuels for testing which are clean and bright, with pour and cloud points adequate for operability. The diesel fuel may contain nonmetallic additives as follows: Cetane improver, metal deactivator, antioxidant, dehazer, antirust, pour depressant, dye, dispersant, and biocide.

(2) Use only petroleum fuel meeting the specifications in Table 4 in appendix A of this subpart, or substantially equivalent specifications approved by the Administrator, for exhaust emission testing. Alternatively, petroleum fuel meeting the specifications in Table 5 in appendix A of this subpart may be used in exhaust emission testing. The grade of diesel fuel used must be commercially designated as “Type 2-D” grade diesel fuel and recommended by the engine manufacturer. If the fuel specified in Table 4 in Appendix A of this subpart is used, the adjustment factor specified in § 89.425-96 may be applied to particulate emission values to account for the impact of sulfur in fuel on particulate emissions.

(c) Other fuels may be used for testing provided they meet the following qualifications:

(1) They are commercially available;

(2) Information acceptable to the Administrator is provided to show that only the designated fuel would be used in customer service;

(3) Use of a fuel listed under paragraph (b) of this section would have a detrimental effect on emissions or durability; and

(4) Fuel specifications are approved in writing by the Administrator prior to the start of testing.

(d) Report the specification range of the fuel to be used under paragraphs (b)(2) and (c)(1) through (c)(4) of this section in the application for certification in accordance with § 89.115-96 (a)(8).