Abstract: Data collection and analysis processes include collecting energy consumption data from an in-vehicle energy source sensor, collecting emissions data from an in-vehicle emissions sensor, the emissions data reflecting emissions produced by a vehicle, and collecting mileage data from a mileage sensor in the vehicle. The data collection and analysis processes also include processing the energy consumption data and the emissions data as a function of the mileage data, calculating an efficiency rating from the processing, and transmitting results of the processing to a data collection system.

Abstract: In some embodiments, a deposit-forming reference fuel composition comprises a high sulfur base fuel composition in an amount greater than 50 weight % based on total weight % of the deposit-forming reference fuel composition, wherein the high sulfur base fuel composition comprises greater than or equal to 200 ppm sulfur based on total sulfur content of the base fuel composition. The deposit-forming reference fuel composition also comprises a reactive diolefin dopant; and a reaction initiating peroxide. The reaction initiating peroxide has an active oxygen content greater than or equal to 2 weight % based on total oxygen content of the reaction initiating peroxide and a half-life temperature of 80° C. to 200° C. The deposit-forming reference fuel composition is free from a detergent additive and has a concentration ratio of greater than 1:1 for the reactive diolefin dopant to the reaction initiating peroxide.

Abstract: Data collection and analysis processes include collecting energy consumption data from an in-vehicle energy source sensor, collecting emissions data from an in-vehicle emissions sensor, the emissions data reflecting emissions produced by a vehicle, and collecting mileage data from a mileage sensor in the vehicle. The data collection and analysis processes also include processing the energy consumption data and the emissions data as a function of the mileage data, calculating an efficiency rating from the processing, and transmitting results of the processing to a data collection system.

Abstract: Biofuels suitable for use in an internal combustion engine contain ethanol and are denatured with a performance-enhancing component. The performance-enhancing denaturant component includes an organic ingredient selected from the group consisting of friction modifiers, lubricity enhancers, anti-oxidants, and combinations thereof. An internal combustion engine fueled by such a biofuel has improved engine performance, including: increasing lubricant oil lubricity, reducing lubricant oil degradation, increasing engine component durability, and/or combinations thereof. In certain aspects, methods of increasing fuel economy are provided. The present disclosure also provides methods of formulating such biofuels.

Abstract: Novel aviation fuel compositions contain a substantially positive or synergistic combination of an alkyl tertiary butyl ether, an aromatic amine and, optionally, a manganese component. The basefuel containing the additive combination may be a wide boiling range alkylate basefuel.

Abstract: Novel aviation fuel compositions contain a substantially positive or synergistic combination of an alkyl tertiary butyl ether, an aromatic amine and, optionally, a manganese component. The basefuel containing the additive combination may be a wide boiling range alkylate basefuel.

Abstract: Novel aviation fuel compositions contain a substantially positive or synergistic combination of an alkyl tertiary butyl ether, an aromatic amine and, optionally, a manganese component. The basefuel containing the additive combination may be a wide boiling range alkylate basefuel.

Abstract: A gasoline fuel composition comprising a major portion of gasoline and a minor portion of a mixture of dialkyl diphenylamines, effective to increase the octane number of the gasoline composition represented by the formula: ##STR1## where R and R' independently comprise one or more of butyl, pentyl, hexyl, heptyl and octyl alkyl radicals in any isomeric form is provided.

Abstract: A gasoline fuel composition comprising a major portion of gasoline and a minor portion of a diphenylamine, effective to increase the octane number of the gasoline composition, represented by the formula: ##STR1## where R and R' are independently hydrogen or C.sub.9 aliphatic hydrocarbons.

Abstract: A gasoline fuel composition comprising a major portion of gasoline and a minor portion of one or more polyaryl amines, effective to increase the octane number of the gasoline composition, represented by the formula: ##STR1## where R.sup.1 -R.sup.5 are independently hydrogen or C.sub.1 -C.sub.8 aliphatic hydrocarbons; R.sup.6 -R.sup.8 are independently hydrogen or C.sub.1 -C.sub.6 aliphatic hydrocarbons; x is between 0 and about 2, inclusive, y is between 0 and about 3, inclusive; and z is between about 1 and about 50, inclusive.