Abstract: Lubricating oil composition having a sulphur content of from 0.01 to 0.3 wt. %, a phosphorus content of from 0.01 to 0.1 wt. % and a sulphated ash content of from 0.1 to 1.2 wt. %, based on the total weight of the lubricating oil composition is provided. The lubricating oil composition contains a mineral and/or synthetic base oil and one or more compounds of formula I, wherein R is an optionally substituted branched or straight chain alkyl group containing from 3 to 50 carbon atoms; R1 is hydrogen or an optionally substituted branched or straight chain alkyl group containing from 1 to 50 carbon atoms; n is an integer equal to or greater than 1, and m is also an integer equal to or greater than 1; and X is an integer from 2 to 10,000. A method of improving engine cleanliness in diesel, gas-fuelled or gasoline engine applications using such composition is also provided.

Abstract: The present invention relates to a lubricant composition having a sulphur content of from 0.01 to 0.3 wt. %, a phosphorus content of from 0.01 to 0.1 wt. % and a sulphated ash content of from 0.1 to 1.2 wt. %, based on the total weight of the lubricant composition, which comprises a base oil or base oil blend, wherein the lubricant composition has a kinematic viscosity at 100° C. of more than 5.0 mm2/s (cSt), a cold cranking simulated dynamic viscosity at ?15° C. according to ASTM D 5293 of less than 9500 mPas (cP) and a mini rotary viscosity test value of less than 60000 mPas at ?20° C. according to ASTM D 4684, and wherein the base oil or base oil blend comprises a continuous series of iso-paraffins having n, n+1, n+2, n+3 and n+4 carbon atoms. The invention relates further to the use of the lubricant composition, for the reduction of piston ring deposits in an internal combustion engine.

Abstract: The present invention relates to a lubricant composition comprising a base oil or base oil blend and one or more additives, wherein the lubricant composition has a kinematic viscosity at 100° C. of more than 5.0 mm2/s (cSt), a cold cranking simulated dynamic viscosity at ?15° C. according to ASTM D 5293 of less than 9500 mPas (cP) and a mini rotary viscosity test value of less than 60000 mPas at ?20° C. according to ASTM D 4684, and wherein the base oil or base oil blend has been obtained from a waxy paraffinic Fischer-Tropsch synthesized hydrocarbon fraction and comprises a continuous series of isoparaffins having n, n+1, n+2, n+3 and n+4 carbon atoms, wherein n is between 15 and 35, suitable for the reduction of piston ring fouling in an internal combustion engine.

Abstract: A diesel engine system comprising a diesel engine provided with a crankcase comprising a crankcase lubricating oil, an air intake, an air compressor, an effluent turbine, an after cooler, and a blow by gas recirculation system comprising a conduit to recirculate the blow-by gas to the air intake, wherein the crankcase lubricating oil comprises an iso-paraffinic base oil having a saturates content of greater than 99 wt % and a viscosity index of greater than 120, a performance additive package system, and a viscosity modifier additive.

Abstract: A lubricating oil composition having a sulfur content of from 0.3 to 0.5 wt. %, a phosphorus content of from 0.10 to 0.13 wt. % and a sulfated ash content of from 0.1 to 1.1 wt. %, based on the total weight of the lubricating oil composition is provided. The lubricating oil composition contains at least one Group II mineral base oil; at least one alkali and/or alkaline earth metal alkyl salicylate; an ashless dispersant; at least one zinc didithiophosphate; and at least one aminic ashless antioxidant and at least one phenolic ashless antioxidant.

Abstract: Lubricating oil composition having a sulphur content of from 0.01 to 0.3 wt. %, a phosphorus content of from 0.01 to 0.1 wt. % and a sulphated ash content of from 0.1 to 1.2 wt. %, based on the total weight of the lubricating oil composition is provided. The lubricating oil composition contains a mineral and/or synthetic base oil and one or more compounds of formula I, wherein R is an optionally substituted branched or straight chain alkyl group containing from 3 to 50 carbon atoms; R1 is hydrogen or an optionally substituted branched or straight chain alkyl group containing from 1 to 50 carbon atoms; n is an integer equal to or greater than 1, and m is also an integer equal to or greater than 1; and X is an integer from 2 to 10,000. A method of improving engine cleanliness in diesel, gas-fuelled or gasoline engine applications using such composition is also provided.