Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Stanley James Cartwright0
Alan Gary Blahey0
Date of Patent
January 23, 2007
Patent Application Number
09806873
Date Filed
October 13, 1998
Patent Primary Examiner
Patent abstract
A gas engine oil of enhanced life as evidenced by a reduction in viscosity increase, oxidation, nitration. TAN increase, and TBN depletion comprises a major amount of a base oil of lubricating viscosity and at minor amount of a phenolic anti oxidant and a viscosity index improver, but excluding amine type anti oxydants.
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