ASTM-D4742 2008

$44.96

D4742-08 Standard Test Method for Oxidation Stability of Gasoline Automotive Engine Oils by Thin-Film Oxygen Uptake (TFOUT)

Published By	Publication Date	Number of Pages
ASTM	2008	11

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Category: ASTM

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Description

ASTM D4742-08

Historical Standard: Standard Test Method for Oxidation Stability of Gasoline Automotive Engine Oils by Thin-Film Oxygen Uptake (TFOUT)

ASTM D4742

Scope

1.1 This test method evaluates the oxidation stability of engine oils for gasoline automotive engines. This test, run at 160°C, utilizes a high pressure reactor pressurized with oxygen along with a metal catalyst package, a fuel catalyst, and water in a partial simulation of the conditions to which an oil may be subjected in a gasoline combustion engine. This test method can be used for engine oils with viscosity in the range from 4 mm²/s (cSt) to 21 mm²/s (cSt) at 100°C, including re-refined oils.

1.2 This test method is not a substitute for the engine testing of an engine oil in established engine tests, such as Sequence IIID.

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Sections 7 and 8.

Keywords

oxidation stability; oxygen uptake; sequence IIID engine simulation; TFOUT; Automotive engine fuels/oils; Bomb methods; Fuel oils; Lubricants (fluid); Lubricating oils; Oxidative stability; Oxygen bomb method; Oxygen uptake; Simulation testing; Stability–petroleum products; Thin film oven test (TFOT)

ICS Code

ICS Number Code 75.100 (Lubricants, industrial oils and related products)

DOI: 10.1520/D4742-08

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method
2	Significance and Use Apparatus FIG. 1
3	Reagents Materials Preparation of Apparatus FIG. 2
4	Procedure
5	Report Precision and Bias Keywords FIG. 3
6	A1. APPARATUS FOR THIN-FILM OXYGEN UPTAKE TEST A1.1 A1.2 A1.3 A1.4 A1.5 A1.6 Thermometer
7	FIG. A1.1
8	A2. PREPARATION OF THE FUEL COMPONENT A2.1 A2.2 A2.3 A2.4 A2.5 A2.6 FIG. A1.2
9	A3. PREPARATION OF THE SOLUBLE METAL CATALYST MIXTURE A3.1 A3.2 A3.3 A3.4 A3.5 A3.6 A3.7 FIG. A2.1
10	A4. CLEANING PROCEDURE FOR CATALYST SYRINGES A4.1 A4.2 Materials A4.3 A4.4 A4.5 X1. THIN-FILM OXYGEN UPTAKE TEST RESULTS X1.1 TABLE X1.1

Additional information

Standard Title	D4742-08 Standard Test Method for Oxidation Stability of Gasoline Automotive Engine Oils by Thin-Film Oxygen Uptake (TFOUT)
Published Code	ASTM
Publication Date	2008
Pages Count	11