Abstract: There is disclosed a biodegradable fuel additive composition derived from at least one animal or plant source, and a fuel composition containing a biodegradable fuel additive composition derived from at least one animal or plant source useful for reducing the formation of engine deposits and for improving fuel economy of a vehicle combusting the fuel composition.

Abstract: There is disclosed a method of reducing the conductivity of deposits formed from the combustion of a fuel comprising an iron-containing compound, said method comprising adding a manganese-containing compound to the fuel.

Abstract: There is disclosed a biodegradable fuel additive composition derived from at least one animal or plant source, and a fuel composition containing a biodegradable fuel additive composition derived from at least one animal or plant source useful for reducing the formation of engine deposits and for improving fuel economy of a vehicle combusting the fuel composition.

Abstract: There is disclosed a biodegradable fuel additive composition derived from at least one animal or plant source, and a fuel composition containing a biodegradable fuel additive composition derived from at least one animal or plant source useful for reducing the formation of engine deposits and for improving fuel economy of a vehicle combusting the fuel composition.

Abstract: A fuel additive and method for reducing emissions from an engine combusting a middle distillate fuel. The fuel additive contains a synergistic combination of (a) a cetane improver and (b) a mineral oil co-additive.

Abstract: The use of fuel compositions comprising selected hydrocarbon oils as carriers for detergents has been found to reduce deposit formation as well as prolong the functionality of fuel injectors. The selection and utilization of particularly characterized hydrocarbon oils as detergent carriers reduces intake valve deposits and combustion chamber deposits, in comparison to conventionally used carrier fluids.

Abstract: A fuel additive and method for reducing emissions from an engine combusting a middle distillate fuel. The fuel additive contains a synergistic combination of (a) a cetane improver and (b) a mineral oil co-additive.

Abstract: The present disclosure provides compositions and methods for reducing deposit formation in engines combusting a fuel containing ethanol and a corrosion inhibitor. The present disclosure also provides compositions and methods for reducing deposit formation in engines combusting a fuel containing ethanol, a corrosion inhibitor, and a dispersant.

Abstract: The present disclosure provides compositions and methods for reducing deposit formation in engines combusting a fuel containing ethanol and a corrosion inhibitor.

Abstract: The present disclosure provides a method to reduce wear and prevent deposit formation in an internal combustion engine, said method comprising combusting in said engine a fuel composition comprising gasoline, ethanol and at least one fuel additive. There is also provided a composition to improve wear protection in an internal combustion engine combusting an ethanol-containing fuel, said composition comprising gasoline, ethanol, and one or more fuel additive materials.

Abstract: The present disclosure relates to the use of fuel additives in duel delivery systems contacting or combusting fuels containing ethanol, such as E85. The additives improve the properties of the resulting fuel, minimize the impact of the fuel on the components of the fuel delivery system, improve the protection of the engine and the fuel delivery system, and also enhance the benefits to the consumer and to the environment of utilizing varying amounts of ethanol as a fuel in combustion engines.

Abstract: The present disclosure provides compositions and methods for improving corrosion inhibition in engines combusting a fuel containing ethanol. In particular, E85 fuels are provided containing additives able to reduce, eliminate and/or prevent corrosion of engine combustion surfaces and surfaces of engine components exposed to the fuel containing ethanol.

Abstract: The present disclosure provides a fuel composition containing gasoline, ethanol and a volatility agent, such that the cold start performance of the gasoline/ethanol blend fuel is enhanced. Also provided is a fuel composition containing ethanol and a volatility agent and also a method for improving the cold start performance of an engine.

Abstract: There is disclosed a biodegradable fuel additive composition derived from at least one animal or plant source, and a fuel composition containing a biodegradable fuel additive composition derived from at least one animal or plant source useful for reducing the formation of engine deposits and for improving fuel economy of a vehicle combusting the fuel composition.

Abstract: The use of fuel compositions comprising selected hydrocarbon oils as carriers for detergents has been found to reduce deposit formation as well as prolong the functionality of fuel injectors. The selection and utilization of particularly characterized hydrocarbon oils as detergent carriers reduces intake valve deposits and combustion chamber deposits, in comparison to conventionally used carrier fluids.

Abstract: There is disclosed a method of reducing the conductivity of deposits formed from the combustion of a fuel comprising an iron-containing compound, said method comprising adding a manganese-containing compound to the fuel.

Abstract: This invention relates to a novel fuel additive composition which provides reduced engine deposits and control of octane requirement increase in engines. The composition comprises:a) a Mannich reaction product of (i) a high molecular weight alkyl-substituted phenol, (ii) amine, and (iii) aldehyde wherein the ratio of (i) to (ii) to (iii) in the reaction is within the range of from 1.0:0.1-10:0.1-10;b) a polyoxyalkylene compound; andc) optionally, poly-.alpha.-olefin;wherein the additive composition contains from about 50 to about 90 wt. % of (a), from about 10 to about 50 wt. % of (b), and from about 0 to about 40 wt. % of (c).

Abstract: Fuel additives and fuel additive compositions are described comprising: (i) at least one fuel-soluble detergent/dispersant which is (a) a fuel-soluble salt, amide, imide, oxazoline and/or ester, or a mixture thereof, of a long chain aliphatic hydrocarbon-substituted dicarboxylic acid or its anhydride, (b) a long chain aliphatic hydrocarbon having a polyamine attached directly thereto, and/or (c) a Mannich condensation product formed by condensing a long chain aliphatic hydrocarbon-substituted phenol with an aldehyde, and an amine; wherein the long chain hydrocarbon group in (a), (b) and (c) is a polymer of at least one C.sub.2 to C.sub.10 monoolefin, said polymer having a number average molecular weight of at least about 300; (ii) a fuel-soluble cyclopentadienyl complex of a transition metal; and (iii) a fuel-soluble liquid carrier or additive induction aid. These compositions in use enable surprising improvements in intake valve deposit control as well as other advantages.

Abstract: New, highly effective detergent/dispersants for use in spark ignition fuels are described. They are Mannich condensation products formed from (i) one mole part of hydroxyaromatic compound having on the ring an aliphatic hydrocarbyl substituent derived from a polyolefin having a number average molecular weight in the range of about 500 to about 3000, (ii) from 0.8 to 1.5 mole part(s) of aliphatic polyamine having one and only one primary or secondary amino group in the molecule capable of participating in the Mannich condensation reaction, and (iii) from 0.8 to 1.3 mole part(s) of aldehyde, provided that the mole ratio of aldehyde to amine is 1.2 or less. Carrier fluids such as poly(oxyalkylene) compounds further enhance the effectiveness of these Mannich condensation products in minimizing or reducing intake valve deposits and/or intake valve sticking.

Abstract: The combination of a fuel-soluble succinimide detergent/dispersant, a fuel-soluble liquid carrier or induction aid therefor, and a fuel-soluble cyclopentadienyl manganese tricarbonyl compound can sharply reduce the formation or accumulation of engine deposits such as intake valve deposits in internal combustion engines. In fact, such compositions can function synergistically whereby the effectiveness of a highly effective succinimide-based deposit control additive can be improved by the addition thereto of the manganese compound, the latter not known to be a substance that reduces deposits.