[Code of Federal Regulations]
[Title 16, Volume 1]
[Revised as of January 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 16CFR306.5]

[Page 318-319]
 
                     TITLE 16--COMMERCIAL PRACTICES
 
                   CHAPTER I--FEDERAL TRADE COMMISSION
 
PART 306_AUTOMOTIVE FUEL RATINGS, CERTIFICATION AND POSTING
--Table of Contents
 
Sec. 306.5  Automotive fuel rating.

    If you are a refiner, importer, or producer, you must determine the 
automotive fuel rating of all automotive fuel before you transfer it. 
You can do that yourself or through a testing lab.
    (a) To determine the automotive fuel rating of gasoline, add the 
research octane number and the motor octane number and divide by two, as 
explained by the American Society for Testing and Materials (``ASTM'') 
in ASTM D4814-92c, entitled ``Standard Specifications for Automotive 
Spark-Ignition Engine Fuel.'' To determine the research octane number, 
use ASTM standard test method D2699-92, and to determine the motor 
octane number, use ASTM standard test method D2700-92.
    (b) To determine automotive fuel ratings for alternative liquid 
automotive fuels, you must possess a reasonable

[[Page 319]]

basis, consisting of competent and reliable evidence, for the percentage 
by volume of the principal component of the alternative liquid 
automotive fuel that you must disclose. You also must have a reasonable 
basis, consisting of competent and reliable evidence, for the minimum 
percentages by volume of other components that you choose to disclose.

[58 FR 41373, Aug. 3, 1993]