Fuel and lubricant compositions are provided that contain a primary low-speed pre-ignition (LSPI)-reducing additive comprising (i) an amino additive, (ii) an amine additive, (iii) a triazole additive, (iv) a benzamidinium additive, (v) a benzoxazole additive, or (vi) a NCX motif additive. Methods for preventing or reducing low speed pre-ignition events in spark-ignited engines using these compositions are also provided.

Fuel and lubricant compositions are provided that contain a primary low-speed pre-ignition (LSPI)-reducing additive comprising (i) an amino additive, (ii) an amine additive, (iii) a triazole additive, (iv) a benzamidinium additive, (v) a benzoxazole additive, or (vi) a NCX motif additive. Methods for preventing or reducing low speed pre-ignition events in spark-ignited engines using these compositions are also provided.

Provided is a composite additive for fuel capable of significantly delaying a phase separation phenomenon even in poor environmental conditions such as high humidity, low temperature, storage for a long period of time, and the like, preventing freezing in winter due to a lower freezing point, and having an excellent cleaning effect on impurities fixedly adhered in an engine. Further, the composite additive for fuel may prevent fuel from being used for purposes other than as a fuel, for example, as a drink, and avoid causing fatal problems.

Provided is a composite additive for fuel capable of significantly delaying a phase separation phenomenon even in poor environmental conditions such as high humidity, low temperature, storage for a long period of time, and the like, preventing freezing in winter due to a lower freezing point, and having an excellent cleaning effect on impurities fixedly adhered in an engine. Further, the composite additive for fuel may prevent fuel from being used for purposes other than as a fuel, for example, as a drink, and avoid causing fatal problems.

The present invention relates to novel quaternized ammonium salts of hydrocarbyl epoxides, to the preparation thereof and to the use thereof as a fuel additive and lubricant additive, such as, more particularly, as a detergent additive; for reducing or preventing deposits in the injection systems of direct injection diesel engines, especially in common rail injection systems, for reducing the fuel consumption of direct injection diesel engines, especially of diesel engines with common rail injection systems, and for minimizing power loss in direct injection diesel engines, especially in diesel engines with common rail injection systems; and as an additive for gasoline fuels, especially for operation of DISI engines.

The present disclosure provides fuel additives including quaternary ammonium salt mixtures, fuel compositions including such additives, and methods of improving performance of fuel injector using such additives.

An additive composition for a marine fuel or a heating oil comprising a stabilized colloidal dispersion of catalytic metal particles, a neutral or overbased alkaline earth metal detergent and a carrier fluid miscible with a marine fuel oil, a heavy fuel oil, a marine distillate fuel, and/or a residual fuel oil. Also provided are marine fuel and/or heating oil compositions having the additive composition described above and associated methods and uses.

The present invention relates to novel quaternized ammonium salts of hydrocarbyl epoxides, to the preparation thereof and to the use thereof as a fuel additive and lubricant additive, such as, more particularly, as a detergent additive; for reducing or preventing deposits in the injection systems of direct injection diesel engines, especially in common rail injection systems, for reducing the fuel consumption of direct injection diesel engines, especially of diesel engines with common rail injection systems, and for minimizing power loss in direct injection diesel engines, especially in diesel engines with common rail injection systems; and as an additive for gasoline fuels, especially for operation of DISI engines.

The use of a three-way combination of additives comprising (B)(i) a metal (C.sub.10 to C.sub.40)hydrocarbyl-substituted hydroxybenzoate detergent; (B)(ii) a poly(C.sub.2 to C.sub.6)alkenyl-substituted anhydride or poly(C.sub.2 to C.sub.6)alkenyl-substituted acid; and (B)(iii) an aliphatic hydrocarbyl acid amide, or an aliphatic hydrocarbyl acid imide, or a combination thereof, to inhibit asphaltene precipitation from crude oil.

A liquid fuel composition comprising a base fuel suitable for use in an internal combustion engine; one or more organic UV filter compounds; and one or more ester co-additive compounds provides improvements in terms of stability properties in an additive blend containing said one or more organic UV filter compounds and said one or more ester co-additive compounds, particularly at low temperatures, such as temperatures of 5 C. or lower.