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Power transmission fluids having a Brookfield viscosity of 13,000 mPa s (13,000 cP) or less at -40 DEG C, a viscosity of at least 2.5 mPa s at 150 DEG C in the ASTM D-4683 method, and a viscosity of at least 6.8 mm /s (6.8 cSt) at 100 DEG C after 40 cycles in the FISST of ASTM D-5275 comprise at lea...

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Bibliographische Detailangaben
Hauptverfasser:	SRINIVASAN, SANJAY, MIDLOTHIAN, VIRGINIA 23113, US, SMITH, DAVID W., RICHMOND, VIRGINIA 23113, US
Format:	Patent
Sprache:	ger
Schlagworte:	CHEMISTRY FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	Power transmission fluids having a Brookfield viscosity of 13,000 mPa s (13,000 cP) or less at -40 DEG C, a viscosity of at least 2.5 mPa s at 150 DEG C in the ASTM D-4683 method, and a viscosity of at least 6.8 mm /s (6.8 cSt) at 100 DEG C after 40 cycles in the FISST of ASTM D-5275 comprise at least 50 wt% of 55N to 125N hydrotreated mineral oils, 5 to 40 wt% of hydrogenated poly- alpha -olefin oligomer, 2 to 20 wt% of acrylic viscosity index improver and other additive components. The compositions possess a combination of performance properties necessary for electronically controlled automatic transmissions equipped with torque converter clutches capable of operating in a continuous slip mode.