A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by introducing to a combustion chamber of the engine from 0.1 to 5% by volume of the gasoline used a lubricating oil as a formulated oil, said formulated oil having a composition comprising (i) a major amount of a lubricating oil base stock comprising at least 80% by weight of one branched ester having at least 15% of the total carbons in the form of methyl groups, and (ii) a minor amount of at least one ashless amine phosphate antiwear additive. Also provided is a lubricating engine oil for high compression spark ignition engines including (i) a major amount of a lubricating oil base stock comprising at least 80% by weight formula I below:

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esterified (per OH basis) with 25 to 100% isobutyric acid and 0 to 75% 3,5,5-trimethylhexanoic acid, wherein R is a H, methyl, ethyl, isopropyl, or isobutyl, and (ii) a minor amount of at least one amine phosphate ashless antiwear additive.

The present invention relates to a composition for scavenging hydrogen sulphide and/or mercaptans in hydrocarbon streams, the composition comprising an oxazolidine compound and a synergistic additive.

A fuel composition which includes at least: a fuel from one or more sources selected from the group that comprises mineral, plant and synthetic sources; a compound (T1) selected among polyalkylene glycols, C1-C12 alkyl and polyalkylene glycol ethers, and the mixtures thereof; and a compound (T2) selected among the non-ionic emulsifiers. Also, an additive composition including at least: a compound (T1) selected among the C1-C6 alkyl and polyethylene glycol ethers including two to six units of ethylene glycol; a compound (T2) selected among the esters of one or more C1-C36 alkenyl carboxylic or alkyl carboxylic acids, and a polyol selected among sorbitan and isosorbide, taken alone or mixed together; and possibly a detergent additive. Further, a method for preventing, avoiding or delaying the formation of ice crystals or flakes in a tank of a vehicle provided with an internal combustion engine.

The present invention relates to the use of a diesel fuel additive for removing deposits in a diesel engine.

Described herein are compositions for modifying fuels. The modified fuels are more efficient when compared to conventional fuels such as gasoline. Additionally, the modified fuels burn more efficiently and produce fewer emissions. Finally, the modified fuels also do not require any modifications to existing engines.

The present disclosure is related to refining one or more grain oil composition streams (e.g., distillers corn oil or syrup) in a biorefinery to provide one or more refined grain oil products, where each grain oil product has targeted amounts of a free fatty acid component and the fatty acid alkyl ester component.

Disclosed herein is a method comprising the steps of (a) providing a fuel additive concentrate comprising (i) from about 5 to about 50 wt. %, based on the total weight of the fuel additive concentrate, of one or more fatty acid sorbitan esters, and (ii) about 10 to about 95 wt. %, based on the total weight of the fuel additive concentrate, of a fuel carrier fluid, and (b) storing the fuel additive concentrate at a low temperature environment. Also disclosed is a method operating an internal combustion engine with a fuel composition comprising (a) a major amount of a fuel, and (b) a minor amount of one or more fatty acid sorbitan esters in a low temperature environment.

The present invention relates to a fuel additive. The fuel additive comprises 70-90 wt. % of a nonylphenol polyether amine, 10-30 wt. % of a multi-amido polyisobutylene amine, and 0-20 wt. % of an auxiliary additive based on the total weight of the fuel additive. The fuel additive provided by the present disclosure is able to effectively remove carbon deposits at a gas intake valve and a combustion chamber of a fuel engine.

Diesel fuel compositions are provided that have unexpectedly beneficial cold flow properties. Methods for forming such diesel fuel compositions are also provided. The improved cold flow properties are achieved in part based on dewaxing of a distillate fraction of the composition. The improved cold flow properties are achieved further in part based on inclusion of a cold flow additive and fatty acid alkyl ester in the composition, such as fatty acid methyl ester.

A process for manufacturing a lubricant additive for internal combustion engine fuel, especially for diesel fuel, in which the additive is derived, especially directly, from the esterification of acid oils, such acid oils are especially coming from the acidification of neutralization paste obtained via a process for refining, preferably a process for chemical refining, and especially a process for saponifying, one or more oils chosen from a plant oil and/or an animal oil, and the lubricant additive is more particularly intended for fuels with a low sulfur content, for example less than 500 ppm (weight).