Lubricating oil composition for lubricating automotive engines
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United States of America Patent
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Jul 22, 2014
Grant Date -
May 31, 2012
app pub date -
Nov 11, 2011
filing date -
Nov 29, 2010
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Abstract
A lubricating oil composition of SAE viscosity grade 0W20 which comprises a base oil and additive components comprising a nitrogen-containing ashless dispersant, an alkaline earth metal-containing detergent, a phosphorus-containing wear inhibitor, an oxidation inhibitor and a viscosity index improver and which shows a viscosity index of 200-240, a HTHS viscosity of not less than 2.9 mPa·s s at 150° C. and a Noack evaporation loss of not more than 13% favorably gives a high fuel economy and high wear inhibition to a four cycle gasoline engine of motorcycles and a diesel engine mounted on motor cars equipped with an exhaust gas post-processing apparatus.
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