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Title: Extended service 5w-40 motor oil

Patent ·
OSTI ID:5716994

An extended drain 5W-40 motor oil composition for internal combustion engines comprises a base oil component of one or more solvent extracted mineral oils and a high refractory mineral oil, a V.I. improver, and preferably other suitable lube oil additives. The finished oil formulation has characteristics of minimal viscosity at low temperatures, low volatility at higher temperatures, and stable viscosity over extended use.

Assignee:
The Standard Oil Co.
Patent Number(s):
US 4402841
OSTI ID:
5716994
Resource Relation:
Patent File Date: Filed date 16 Feb 1982; Other Information: PAT-APPL-348896
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
INTERNAL COMBUSTION ENGINES
LUBRICATING OILS
CHEMICAL COMPOSITION
VISCOSITY
DEVOLATILIZATION
MINERAL OILS
PETROLEUM FRACTIONS
SOLVENT EXTRACTION
STABILIZATION
ENERGY SOURCES
ENGINES
EXTRACTION
FOSSIL FUELS
FUELS
HEAT ENGINES
LUBRICANTS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
SEPARATION PROCESSES
023000* - Petroleum- Properties & Composition
020500 - Petroleum- Products & By-Products