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A Modified Thin-Film Oxygen Uptake Test (TFOUT) for the Evaluation of Lubricant Stability in ASTM Sequence IIIE Test
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 01, 1990 by SAE International in United States
Annotation ability available
A modified thin-film oxygen uptake test (MTFOUT) has been developed for use with oils for the ASTM Sequence IIIE test.
The thin-film oxygen uptake test (ASTM D4742) was originally developed to evaluate the oxidation stability of automotive crankcase lubricants under conditions similar to ASTM engine sequence IIID test. The test utilized fuel fractions and mixed metals catalysts to simulate the chemical environments in the engine test. Results on reference oils from TFOUT have been shown to agree with those obtained from the ASTM IIID sequence test.
Recently, ASTM Sequence IIIE test was developed to replace the IIID. The IIIE defines a new oil category having improved performance in oxidation, wear and deposits. The oxidation severity of IIIE is increased by using smaller oil charge and increased blow-by to oil charge ratio.
There are two technical issues with TFOUT: effectiveness in simulating IIIE conditions and the ability to rank oils containing copper inhibitors with oils that do not. The metals catalyst was reformulated and the fuel catalyst was modified. The new catalyst package appears to be effective in simulating IIIE conditions on a series of reference oils. Validation of the modified TFOUT awaits further user experience.
CitationKu, C., Pei, P., and Hsu, S., "A Modified Thin-Film Oxygen Uptake Test (TFOUT) for the Evaluation of Lubricant Stability in ASTM Sequence IIIE Test," SAE Technical Paper 902121, 1990, https://doi.org/10.4271/902121.
- Smolenski, D. J. Bergin, S. P. “Development of the ASTM Sequence IIIE Engine Oil Oxidation and Wear Test,” SAE paper no. 881576 1988
- Edmisten, W. C. Peterson, J. V. Sholts, R. S. “Three Aspects of Motor Oil Thickening,” SAE paper no. 700509 1970
- Gallopoulos, N. E. “Engine OIl Thickening in High Speed Passenger Car Service” SAE paper no. 700506 1970
- Ku, C. S. Hsu, S. M. “A Thin Film Oxygen Uptake Test for the Evaluation of Automotive Crankcase Lubricants,” Lubrication Engineering 40 2 75 1984
- ASTM D4742 “Oxidation Stability of Gasoline Automotive Engine Oils by Thin-Film Oxygen Uptake (TFOUT),” 1989 Annual Book 5.03 ASTM Philadelphia, PA
- Gunsel, S. Lockwood, F. E. Westmoreland, T. D. “Engine Oil Oxidation Correlation of ASTM III-D and III-E Sequence Engine Tests to Bench Test,” SAE paper no. 892164 1989
- Hsu, S. M. “Review of Laboratory Bench Tests in Assessing the Performance of Automotive Crankcase Oils,” Lubrication Egnr. 37 12 722 1981
- Hambin, P. C. et al “A Review: Ashless Antioxidants, Copper Deactivators and Corrosion Inhibitors. Their use in Lubricating Oils,” 5th International Colloquium on Additives for Lubricants and Operational Fluids Esslingen Germany Jan. 14-16 1986
- Selby, T. “Oxidation Studies with A Modified Thin-Film Oxygen Uptake Test,” SAE paper no. 872127 1988
- Anderson, D. J. “Mechanism of Engine Deposit and Wear. A Progress Report,” Jap. Petrol. Inst. Meeting Tokyo, Japan Oct. 1968
- Spindt, R. S. Wolfe, C. L. Stevens, D. R. “Nitrogen Oxides, Combustion and Engine Deposits,” SAE Trans. 64 797 1956
- Dimmitroff, E. Mofitt, J. V. Quillian, R. D. “Aromatic Compounds in Fuels Identified as Main Precursors of Engine Varnish,” SAE Jour. 77 52 1969
- Vineyard, B. D. Coran, A. Y. “Gasoline Engine Deposit: I. Blowby Collection and the Identification of Deposit Precursors,” ACS Symposium New York Sept. 1969
- Hanson, J. B. Harris, S. W. West, C. T. “Factors Influencing Lubricant Performance in the Sequence VE Test,” SAE paper no. 8815581 1988
- McGeehan, J. A. Yamaguchi E. S. “Gasoline-Engine Camshaft Wear: The Culprit is Blow-By,” SAE paper 892112 1989
- Mahoney, L. R. Otto, K. Korcek, S. Johnson, M. D. “The Effect of Fuel Combustion Products on Antioxidant Consumption in a Synthetic Engine,” I&EC Product Research & Development 19 11 1980
- Clark, D. B. Klaus, E. E. Hsu, S. M. “The Role of Iron and Copper in the Oxidation Degradation of Lubricating Oils,” Lubrication Engr. 41 5 280 1985
- Lahijani, J. Lockwood, F. E. Klaus, E. E. “The Influence of Metals on Sludge Formation,” ASLE Trans. 25 1 25 1982
- Klaus, E. E. Tewksbury, E. J. “Microcorrosion Studies with Frictional Fluids,” Lubr. Eng. 29 205 1973
- Downing, F. B. Fitch, H. M. “Lubricant,” 1944
- Black, J. F. “Oxidation Inhibitor and Composition Containing The Same,” 1978
- Cloclough, T. Gibson, F. A. Marsh, J. F. “Improved Lubricating Oil Compositions,” 1981
- Hotten, B. W. King, J. M. “Lubricating Oil Additive Composition,” June 1977
- Gutierrez, A. Brownawell, D. W. Brois, S. J. “Copper Complexes of Oxazolines and Lactone Oxazolines As Lubricating Oil Additives,” 1984
- Farng, L. O. Horodysky, A. G. “Copper Salts of Hindered Phenol Substituted Succinic Anhydride Derivatives As Antioxidant Additives,” 1988
- Farng, L. O. Horodysky, A. G. “Copper Salts of Hindered Phenolic Carboxylates and Lubricants and Fuels Containing Same,” 1989