Abstract: Use of an additive selected from nitrate compounds, peroxide compounds, nitrite compounds and polyether compounds, and mixtures thereof in a diesel fuel composition for reducing the build-up of deposits in an Exhaust Gas Recirculation (EGR) system of a compression ignition internal combustion engine.

Abstract: Use of an additive selected from nitrate compounds, peroxide compounds, nitrite compounds and polyether compounds, and mixtures thereof in a diesel fuel composition for reducing the build-up of deposits in an Exhaust Gas Recirculation (EGR) system of a compression ignition internal combustion engine.

Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R4 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; and X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.

Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R5 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.

Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R5 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.

Abstract: Use in a gas oil fuel composition, which preferably comprises a Fischer-Tropsch derived fuel, of a compound according to formula (I): wherein: R1 to R4 are each independently hydrogen or a C1-10 alkyl group, where such alkyl groups may be the same as or different from one another; and X is a nitrogen- or oxygen-containing group, for the purpose of reducing the cetane number of said fuel composition; preparation of such a fuel composition; and operating a fuel consuming system.

Abstract: A system comprising a liner at an interior of the pipe; at least one dry fiber tri-axial braid layer exterior to the liner, the tri-axial braid layer comprising a plurality of axial fibers, a plurality of clockwise fibers, and a plurality of counterclockwise fibers.

Abstract: A gasoline composition is disclosed comprising: (a) a major amount of gasoline; and (b) from 0.1 to 5 wt %, based on the overall gasoline composition, of a base oil having a kinematic viscosity at 100° C. of at least 1 cSt which is derived from the product of a Fischer-Tropsch synthesis process.

Abstract: The use of from 0.1 to 5 wt %, based on overall gasoline composition, of a base oil having a kinematic viscosity at 100° C. of at least 1 cSt, in a gasoline composition comprising a major amount of gasoline is disclosed for improving the acceleration response of a four-stroke spark-ignition internal combustion engine fueled by the gasoline composition. A method of operating a four-stroke spark-ignition internal combustion engine is also disclosed which method involves introducing into a combustion chamber of said engine a gasoline composition comprising: (a) a major amount of a gasoline; and (b) from 0.1 wt % to 5 wt %, based on the overall gasoline composition, of a base oil having a kinematic viscosity at 100° C. of at least 1 cSt.

Abstract: A blend composition comprising (i) one or more base fuels having an aromatics content of below 80% by weight, said one or more base fuels being present in the amount of 10 to 95% by weight of the blend composition; (ii) a fuel additive mixture comprising one or more fuel additives, wherein said additives include an anti-foam agent, said fuel additive mixture being present preferably in the amount of 0.01 to 80% by weight of the blend composition; (iii) an organic molecule containing a moiety CR1R2R3(OH) wherein R1, R2 and R3 are each independently hydrogen or an organic carbon-containing group; and optionally (iv) an aromatic solvent having an aromatics content of greater than 80% by weight; a process for the preparation of said blend composition; and a fuel composition comprising a second base fuel and said blend composition.

Abstract: A method of preparing a fuel composition containing a distillate fuel, a detergent additive and a cold flow additive, of a further additive selected from (a) acids and mixtures thereof; and (b) lubricity enhancing additives are provided, for the purpose of reducing the effect of the detergent additive on the cold flow performance of the composition, and/or improving the cold flow performance of the composition, and/or reducing the amount of cold flow additive in the composition, and/or increasing the concentration of detergent additive in the composition without undue impairment of the cold flow performance. The further additive is preferably selected from carboxylic acids, more preferably fatty acids, and mixtures thereof. The distillate fuel is preferably a middle distillate fuel. The overall fuel composition is preferably an automotive fuel composition, more preferably a diesel fuel composition.

Abstract: The invention provides a gasoline composition comprising a major amount of a gasoline suitable for use in a spark ignition engine; 5 to 1000 ppmw, based on total composition, of a fatty acid salt of an alkoxylated oligoamine of general formula I 1