METHOD OF OPERATING A HYBRID ENGINE
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United States of America Patent
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Issued Date -
Jan 19, 2012
app pub date -
Oct 12, 2009
filing date -
Oct 20, 2008
priority date (Note) -
Abandoned
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Abstract
; a Noack volatility of at most 13 weight %; and comprises: (A) a base oil which is at least one synthetic basestock, the base oil having a kinematic viscosity of at least 2.0 cSt (2.0 mm2/s) at 100 ° C.; and (B) an additive package which comprises at least one dispersant, at least one detergent, and at least one phosphorus-containing, anti-wear additive in an amount to provide a total concentration of phosphorus-containing, anti-wear additives in the engine oil composition corresponding to 0.01 to 0.2 weight % phosphorus in the engine oil composition.
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