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U.S. Department of Energy
Office of Scientific and Technical Information

Lubricating composition containing emulsion-sludge inhibitors

Patent ·
OSTI ID:5650265
A lubricating oil composition is disclosed for use in the crankcase of an internal combustion engine. It has improved resistance to the formation of emulsion-sludge in the area under the engine rocker cover, which contains the combination of an oxyalkylated alkylphenol-formaldehyde condensation product and tetra polyoxyethylene polyoxypropylene derivative of ethylene diamine.
Assignee:
Ethyl Corp
Patent Number(s):
US 4305834
OSTI ID:
5650265
Country of Publication:
United States
Language:
English